| Base | Representation |
|---|---|
| bin | 1110100100110… |
| … | …0100110001110 |
| 3 | 11021000210011200 |
| 4 | 3221030212032 |
| 5 | 111122144100 |
| 6 | 10022130330 |
| 7 | 1341414633 |
| oct | 351144616 |
| 9 | 137023150 |
| 10 | 61131150 |
| 11 | 31563813 |
| 12 | 185809a6 |
| 13 | c884aa2 |
| 14 | 819418a |
| 15 | 5577e00 |
| hex | 3a4c98e |
61131150 has 144 divisors (see below), whose sum is σ = 178100208. Its totient is φ = 14976000.
The previous prime is 61131143. The next prime is 61131157. The reversal of 61131150 is 5113116.
61131150 is a `hidden beast` number, since 611 + 3 + 1 + 1 + 50 = 666.
61131150 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is an interprime number because it is at equal distance from previous prime (61131143) and next prime (61131157).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (61131157) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 466585 + ... + 466715.
It is an arithmetic number, because the mean of its divisors is an integer number (1236807).
Almost surely, 261131150 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 61131150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89050104).
61131150 is an abundant number, since it is smaller than the sum of its proper divisors (116969058).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
61131150 is a wasteful number, since it uses less digits than its factorization.
61131150 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 227 (or 219 counting only the distinct ones).
The product of its (nonzero) digits is 90, while the sum is 18.
The square root of 61131150 is about 7818.6411862932. The cubic root of 61131150 is about 393.9316320000.
Adding to 61131150 its reverse (5113116), we get a palindrome (66244266).
The spelling of 61131150 in words is "sixty-one million, one hundred thirty-one thousand, one hundred fifty".
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