56475517 has 8 divisors (see below), whose sum is σ = 64656000. Its totient is φ = 48323184.

The previous prime is 56475487. The next prime is 56475527. The reversal of 56475517 is 71557465.

It is a happy number.

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

It is not a de Polignac number, because 56475517 - 2⁷ = 56475389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56475517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56475527) 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, 2542 + ... + 10927.

It is an arithmetic number, because the mean of its divisors is an integer number (8082000).

Almost surely, 2^56475517 is an apocalyptic number.

It is an amenable number.

56475517 is a deficient number, since it is larger than the sum of its proper divisors (8180483).

56475517 is a wasteful number, since it uses less digits than its factorization.

56475517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14075.

The product of its digits is 147000, while the sum is 40.

The square root of 56475517 is about 7515.0194277859. The cubic root of 56475517 is about 383.6660802465. Note that the first 3 decimals are identical.

The spelling of 56475517 in words is "fifty-six million, four hundred seventy-five thousand, five hundred seventeen".