56257473 has 4 divisors (see below), whose sum is σ = 75009968. Its totient is φ = 37504980.

The previous prime is 56257469. The next prime is 56257507. The reversal of 56257473 is 37475265.

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 not a de Polignac number, because 56257473 - 2² = 56257469 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56257463) 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, 9376243 + ... + 9376248.

It is an arithmetic number, because the mean of its divisors is an integer number (18752492).

Almost surely, 2^56257473 is an apocalyptic number.

It is an amenable number.

56257473 is a deficient number, since it is larger than the sum of its proper divisors (18752495).

56257473 is a wasteful number, since it uses less digits than its factorization.

56257473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18752494.

The product of its digits is 176400, while the sum is 39.

The square root of 56257473 is about 7500.4981834542. The cubic root of 56257473 is about 383.1716832392.

The spelling of 56257473 in words is "fifty-six million, two hundred fifty-seven thousand, four hundred seventy-three".