56255515 has 4 divisors (see below), whose sum is σ = 67506624. Its totient is φ = 45004408.

The previous prime is 56255513. The next prime is 56255519. The reversal of 56255515 is 51555265.

56255515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56255515 - 2¹ = 56255513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56255513) 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 3 ways as a sum of consecutive naturals, for example, 5625547 + ... + 5625556.

It is an arithmetic number, because the mean of its divisors is an integer number (16876656).

Almost surely, 2^56255515 is an apocalyptic number.

56255515 is a deficient number, since it is larger than the sum of its proper divisors (11251109).

56255515 is a wasteful number, since it uses less digits than its factorization.

56255515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11251108.

The product of its digits is 37500, while the sum is 34.

The square root of 56255515 is about 7500.3676576552. The cubic root of 56255515 is about 383.1672378513.

The spelling of 56255515 in words is "fifty-six million, two hundred fifty-five thousand, five hundred fifteen".