56513765 has 32 divisors (see below), whose sum is σ = 85052160. Its totient is φ = 35020800.

The previous prime is 56513749. The next prime is 56513767. The reversal of 56513765 is 56731565.

It is not a de Polignac number, because 56513765 - 2⁴ = 56513749 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56513767) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87845 + ... + 88485.

It is an arithmetic number, because the mean of its divisors is an integer number (2657880).

Almost surely, 2^56513765 is an apocalyptic number.

56513765 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56513765 is a deficient number, since it is larger than the sum of its proper divisors (28538395).

56513765 is a wasteful number, since it uses less digits than its factorization.

56513765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893.

The product of its digits is 94500, while the sum is 38.

The square root of 56513765 is about 7517.5637676045. The cubic root of 56513765 is about 383.7526732193.

The spelling of 56513765 in words is "fifty-six million, five hundred thirteen thousand, seven hundred sixty-five".