56565553 has 4 divisors (see below), whose sum is σ = 61707888. Its totient is φ = 51423220.

The previous prime is 56565547. The next prime is 56565557. The reversal of 56565553 is 35556565.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56565553 - 2⁵ = 56565521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56565557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2571151 + ... + 2571172.

It is an arithmetic number, because the mean of its divisors is an integer number (15426972).

Almost surely, 2^56565553 is an apocalyptic number.

It is an amenable number.

56565553 is a deficient number, since it is larger than the sum of its proper divisors (5142335).

56565553 is a wasteful number, since it uses less digits than its factorization.

56565553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5142334.

The product of its digits is 337500, while the sum is 40.

The square root of 56565553 is about 7521.0074458147. The cubic root of 56565553 is about 383.8698583328.

The spelling of 56565553 in words is "fifty-six million, five hundred sixty-five thousand, five hundred fifty-three".