56512665 has 24 divisors (see below), whose sum is σ = 106861248. Its totient is φ = 27399840.

The previous prime is 56512649. The next prime is 56512667. The reversal of 56512665 is 56621565.

It is a happy number.

56512665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56512665 - 2⁴ = 56512649 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56512667) 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 23 ways as a sum of consecutive naturals, for example, 56589 + ... + 57578.

It is an arithmetic number, because the mean of its divisors is an integer number (4452552).

Almost surely, 2^56512665 is an apocalyptic number.

56512665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56512665 is a deficient number, since it is larger than the sum of its proper divisors (50348583).

56512665 is a wasteful number, since it uses less digits than its factorization.

56512665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114189 (or 114186 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 56512665 is about 7517.4906052485. The cubic root of 56512665 is about 383.7501833794.

Subtracting 56512665 from its reverse (56621565), we obtain a square (108900 = 330²).

The spelling of 56512665 in words is "fifty-six million, five hundred twelve thousand, six hundred sixty-five".