56475751 has 16 divisors (see below), whose sum is σ = 61106400. Its totient is φ = 52005888.

The previous prime is 56475721. The next prime is 56475761. The reversal of 56475751 is 15757465.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56475751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56475721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246505 + ... + 246733.

It is an arithmetic number, because the mean of its divisors is an integer number (3819150).

Almost surely, 2^56475751 is an apocalyptic number.

56475751 is a deficient number, since it is larger than the sum of its proper divisors (4630649).

56475751 is a wasteful number, since it uses less digits than its factorization.

56475751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498.

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

The square root of 56475751 is about 7515.0349965918. The cubic root of 56475751 is about 383.6666101383. Note that the first 4 decimals are identical.

The spelling of 56475751 in words is "fifty-six million, four hundred seventy-five thousand, seven hundred fifty-one".