Base | Representation |
---|---|
bin | 1110100011001… |
… | …0101100000111 |
3 | 11020211101121100 |
4 | 3220302230013 |
5 | 111110300111 |
6 | 10015551143 |
7 | 1340463354 |
oct | 350625407 |
9 | 136741540 |
10 | 61025031 |
11 | 314a1011 |
12 | 1852b4b3 |
13 | c8486b2 |
14 | 816762b |
15 | 5556756 |
hex | 3a32b07 |
61025031 has 12 divisors (see below), whose sum is σ = 88783240. Its totient is φ = 40389840.
The previous prime is 61025021. The next prime is 61025033. The reversal of 61025031 is 13052016.
61025031 is a `hidden beast` number, since 610 + 2 + 50 + 3 + 1 = 666.
61025031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 61025031 - 218 = 60762887 is a prime.
It is a super-2 number, since 2×610250312 = 7448108817101922, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 61024995 and 61025013.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (61025033) 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 11 ways as a sum of consecutive naturals, for example, 23140 + ... + 25641.
Almost surely, 261025031 is an apocalyptic number.
61025031 is a deficient number, since it is larger than the sum of its proper divisors (27758209).
61025031 is a wasteful number, since it uses less digits than its factorization.
61025031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 48926 (or 48923 counting only the distinct ones).
The product of its (nonzero) digits is 180, while the sum is 18.
The square root of 61025031 is about 7811.8519571226. The cubic root of 61025031 is about 393.7035549148.
Adding to 61025031 its reverse (13052016), we get a palindrome (74077047).
The spelling of 61025031 in words is "sixty-one million, twenty-five thousand, thirty-one".
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