56500312 has 16 divisors (see below), whose sum is σ = 115569000. Its totient is φ = 25681920.

The previous prime is 56500289. The next prime is 56500313. The reversal of 56500312 is 21300565.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56500313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320937 + ... + 321112.

Almost surely, 2^56500312 is an apocalyptic number.

It is an amenable number.

56500312 is an abundant number, since it is smaller than the sum of its proper divisors (59068688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56500312 is a wasteful number, since it uses less digits than its factorization.

56500312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642066 (or 642062 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 56500312 is about 7516.6689430891. The cubic root of 56500312 is about 383.7222202584.

Adding to 56500312 its reverse (21300565), we get a palindrome (77800877).

The spelling of 56500312 in words is "fifty-six million, five hundred thousand, three hundred twelve".