55902931 has 4 divisors (see below), whose sum is σ = 63889072. Its totient is φ = 47916792.

The previous prime is 55902911. The next prime is 55902937. The reversal of 55902931 is 13920955.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55902931 - 2⁹ = 55902419 is a prime.

It is a super-2 number, since 2×55902931² = 6250275388781522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55902937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3993060 + ... + 3993073.

It is an arithmetic number, because the mean of its divisors is an integer number (15972268).

Almost surely, 2^55902931 is an apocalyptic number.

55902931 is a deficient number, since it is larger than the sum of its proper divisors (7986141).

55902931 is an equidigital number, since it uses as much as digits as its factorization.

55902931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7986140.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 55902931 is about 7476.8262652010. The cubic root of 55902931 is about 382.3650535683.

The spelling of 55902931 in words is "fifty-five million, nine hundred two thousand, nine hundred thirty-one".