53688931 has 8 divisors (see below), whose sum is σ = 55932800. Its totient is φ = 51477120.

The previous prime is 53688913. The next prime is 53688937. The reversal of 53688931 is 13988635.

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

It is a cyclic number.

It is not a de Polignac number, because 53688931 - 2²³ = 45300323 is a prime.

It is a super-2 number, since 2×53688931² = 5765002623845522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53688937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4566 + ... + 11323.

It is an arithmetic number, because the mean of its divisors is an integer number (6991600).

Almost surely, 2^53688931 is an apocalyptic number.

53688931 is a deficient number, since it is larger than the sum of its proper divisors (2243869).

53688931 is a wasteful number, since it uses less digits than its factorization.

53688931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16029.

The product of its digits is 155520, while the sum is 43.

The square root of 53688931 is about 7327.2730944056. The cubic root of 53688931 is about 377.2491346723.

The spelling of 53688931 in words is "fifty-three million, six hundred eighty-eight thousand, nine hundred thirty-one".