57216735 has 12 divisors (see below), whose sum is σ = 99175752. Its totient is φ = 30515568.

The previous prime is 57216707. The next prime is 57216737. The reversal of 57216735 is 53761275.

57216735 is a `hidden beast` number, since 572 + 16 + 73 + 5 = 666.

It is not a de Polignac number, because 57216735 - 2²⁰ = 56168159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57216735.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57216737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 635697 + ... + 635786.

It is an arithmetic number, because the mean of its divisors is an integer number (8264646).

Almost surely, 2^57216735 is an apocalyptic number.

57216735 is a deficient number, since it is larger than the sum of its proper divisors (41959017).

57216735 is a wasteful number, since it uses less digits than its factorization.

57216735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271494 (or 1271491 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 57216735 is about 7564.1744427267. The cubic root of 57216735 is about 385.3372768288.

The spelling of 57216735 in words is "fifty-seven million, two hundred sixteen thousand, seven hundred thirty-five".