56256553 has 4 divisors (see below), whose sum is σ = 59565780. Its totient is φ = 52947328.

The previous prime is 56256527. The next prime is 56256581. The reversal of 56256553 is 35565265.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35565265 = 5 ⋅7113053.

It can be written as a sum of positive squares in 2 ways, for example, as 30824704 + 25431849 = 5552^2 + 5043^2 .

It is a cyclic number.

It is not a de Polignac number, because 56256553 - 2⁵ = 56256521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56256523) 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, 1654588 + ... + 1654621.

It is an arithmetic number, because the mean of its divisors is an integer number (14891445).

Almost surely, 2^56256553 is an apocalyptic number.

It is an amenable number.

56256553 is a deficient number, since it is larger than the sum of its proper divisors (3309227).

56256553 is a wasteful number, since it uses less digits than its factorization.

56256553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3309226.

The product of its digits is 135000, while the sum is 37.

The square root of 56256553 is about 7500.4368539439. The cubic root of 56256553 is about 383.1695945100.

The spelling of 56256553 in words is "fifty-six million, two hundred fifty-six thousand, five hundred fifty-three".