56005553 has 4 divisors (see below), whose sum is σ = 56029248. Its totient is φ = 55981860.

The previous prime is 56005541. The next prime is 56005567. The reversal of 56005553 is 35550065.

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 56005553 - 2¹² = 56001457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56025553) 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, 7853 + ... + 13178.

It is an arithmetic number, because the mean of its divisors is an integer number (14007312).

Almost surely, 2^56005553 is an apocalyptic number.

It is an amenable number.

56005553 is a deficient number, since it is larger than the sum of its proper divisors (23695).

56005553 is a wasteful number, since it uses less digits than its factorization.

56005553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23694.

The product of its (nonzero) digits is 11250, while the sum is 29.

The square root of 56005553 is about 7483.6857897696. The cubic root of 56005553 is about 382.5988819780.

The spelling of 56005553 in words is "fifty-six million, five thousand, five hundred fifty-three".