56012553 has 20 divisors (see below), whose sum is σ = 84547540. Its totient is φ = 36951552.

The previous prime is 56012549. The next prime is 56012563. The reversal of 56012553 is 35521065.

56012553 is a `hidden beast` number, since 5 + 601 + 2 + 5 + 53 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 30338064 + 25674489 = 5508^2 + 5067^2 .

It is not a de Polignac number, because 56012553 - 2² = 56012549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56012563) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4293 + ... + 11421.

It is an arithmetic number, because the mean of its divisors is an integer number (4227377).

Almost surely, 2^56012553 is an apocalyptic number.

It is an amenable number.

56012553 is a deficient number, since it is larger than the sum of its proper divisors (28534987).

56012553 is an equidigital number, since it uses as much as digits as its factorization.

56012553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7238 (or 7229 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 56012553 is about 7484.1534591429. The cubic root of 56012553 is about 382.6148213534.

It can be divided in two parts, 56012 and 553, that added together give a palindrome (56565).

The spelling of 56012553 in words is "fifty-six million, twelve thousand, five hundred fifty-three".