56756565 has 16 divisors (see below), whose sum is σ = 100900800. Its totient is φ = 30270096.

The previous prime is 56756563. The next prime is 56756569. The reversal of 56756565 is 56565765.

It is not a de Polignac number, because 56756565 - 2¹ = 56756563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 56756565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56756561) 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 15 ways as a sum of consecutive naturals, for example, 210075 + ... + 210344.

It is an arithmetic number, because the mean of its divisors is an integer number (6306300).

Almost surely, 2^56756565 is an apocalyptic number.

It is an amenable number.

56756565 is a deficient number, since it is larger than the sum of its proper divisors (44144235).

56756565 is a wasteful number, since it uses less digits than its factorization.

56756565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420433 (or 420427 counting only the distinct ones).

The product of its digits is 945000, while the sum is 45.

The square root of 56756565 is about 7533.6953084127. The cubic root of 56756565 is about 384.3014600535.

The spelling of 56756565 in words is "fifty-six million, seven hundred fifty-six thousand, five hundred sixty-five".