51429357 has 32 divisors (see below), whose sum is σ = 90869760. Its totient is φ = 28108080.

The previous prime is 51429349. The next prime is 51429359. The reversal of 51429357 is 75392415.

51429357 is a `hidden beast` number, since 514 + 2 + 93 + 57 = 666.

It is not a de Polignac number, because 51429357 - 2³ = 51429349 is a prime.

It is a super-2 number, since 2×51429357² = 5289957522866898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51429359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1569 + ... + 10262.

It is an arithmetic number, because the mean of its divisors is an integer number (2839680).

Almost surely, 2^51429357 is an apocalyptic number.

It is an amenable number.

51429357 is a deficient number, since it is larger than the sum of its proper divisors (39440403).

51429357 is a wasteful number, since it uses less digits than its factorization.

51429357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11870 (or 11864 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 51429357 is about 7171.4264271482. The cubic root of 51429357 is about 371.8807500182.

The spelling of 51429357 in words is "fifty-one million, four hundred twenty-nine thousand, three hundred fifty-seven".