56015766 has 16 divisors (see below), whose sum is σ = 124479600. Its totient is φ = 18671904.

The previous prime is 56015761. The next prime is 56015767. The reversal of 56015766 is 66751065.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56015766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56015761) 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, 518611 + ... + 518718.

It is an arithmetic number, because the mean of its divisors is an integer number (7779975).

Almost surely, 2^56015766 is an apocalyptic number.

56015766 is an abundant number, since it is smaller than the sum of its proper divisors (68463834).

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

56015766 is a wasteful number, since it uses less digits than its factorization.

56015766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037340 (or 1037334 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 56015766 is about 7484.3681096002. The cubic root of 56015766 is about 382.6221370821.

The spelling of 56015766 in words is "fifty-six million, fifteen thousand, seven hundred sixty-six".