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51252411 = 372440591
BaseRepresentation
bin1100001110000…
…0110010111011
310120102220002110
43003200302323
5101110034121
65030303403
71161431640
oct303406273
9116386073
1051252411
1126a26771
12151b7b63
13a806492
146b41dc7
154775d76
hex30e0cbb

51252411 has 8 divisors (see below), whose sum is σ = 78098944. Its totient is φ = 29287080.

The previous prime is 51252401. The next prime is 51252413. The reversal of 51252411 is 11425215.

51252411 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51252411 - 25 = 51252379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2440591 = 51252411 / (5 + 1 + 2 + 5 + 2 + 4 + 1 + 1).

It is not an unprimeable number, because it can be changed into a prime (51252413) 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 7 ways as a sum of consecutive naturals, for example, 1220275 + ... + 1220316.

It is an arithmetic number, because the mean of its divisors is an integer number (9762368).

Almost surely, 251252411 is an apocalyptic number.

51252411 is a deficient number, since it is larger than the sum of its proper divisors (26846533).

51252411 is a wasteful number, since it uses less digits than its factorization.

51252411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440601.

The product of its digits is 400, while the sum is 21.

The square root of 51252411 is about 7159.0789212021. The cubic root of 51252411 is about 371.4537667679.

Adding to 51252411 its reverse (11425215), we get a palindrome (62677626).

The spelling of 51252411 in words is "fifty-one million, two hundred fifty-two thousand, four hundred eleven".

Divisors: 1 3 7 21 2440591 7321773 17084137 51252411