56475561 has 8 divisors (see below), whose sum is σ = 75843040. Its totient is φ = 37379232.

The previous prime is 56475553. The next prime is 56475571. The reversal of 56475561 is 16557465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56475561 - 2³ = 56475553 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56475571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67300 + ... + 68133.

It is an arithmetic number, because the mean of its divisors is an integer number (9480380).

Almost surely, 2^56475561 is an apocalyptic number.

It is an amenable number.

56475561 is a deficient number, since it is larger than the sum of its proper divisors (19367479).

56475561 is a wasteful number, since it uses less digits than its factorization.

56475561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135575.

The product of its digits is 126000, while the sum is 39.

The square root of 56475561 is about 7515.0223552562. The cubic root of 56475561 is about 383.6661798843. Note that the first 3 decimals are identical.

The spelling of 56475561 in words is "fifty-six million, four hundred seventy-five thousand, five hundred sixty-one".