56681812 has 24 divisors (see below), whose sum is σ = 110517120. Its totient is φ = 25215360.

The previous prime is 56681809. The next prime is 56681813. The reversal of 56681812 is 21818665.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56681813) 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, 11637 + ... + 15772.

It is an arithmetic number, because the mean of its divisors is an integer number (4604880).

Almost surely, 2^56681812 is an apocalyptic number.

It is an amenable number.

56681812 is a deficient number, since it is larger than the sum of its proper divisors (53835308).

56681812 is a wasteful number, since it uses less digits than its factorization.

56681812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27471 (or 27469 counting only the distinct ones).

The product of its digits is 23040, while the sum is 37.

The square root of 56681812 is about 7528.7324298317. The cubic root of 56681812 is about 384.1326671952.

The spelling of 56681812 in words is "fifty-six million, six hundred eighty-one thousand, eight hundred twelve".