56531212 has 24 divisors (see below), whose sum is σ = 100474304. Its totient is φ = 27827712.

The previous prime is 56531207. The next prime is 56531219. The reversal of 56531212 is 21213565.

56531212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (56531219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142198 + ... + 142594.

Almost surely, 2^56531212 is an apocalyptic number.

It is an amenable number.

56531212 is a deficient number, since it is larger than the sum of its proper divisors (43943092).

56531212 is a wasteful number, since it uses less digits than its factorization.

56531212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865 (or 863 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 56531212 is about 7518.7240938872. The cubic root of 56531212 is about 383.7921600240.

Adding to 56531212 its reverse (21213565), we get a palindrome (77744777).

The spelling of 56531212 in words is "fifty-six million, five hundred thirty-one thousand, two hundred twelve".