56475131 has 4 divisors (see below), whose sum is σ = 56565264. Its totient is φ = 56385000.

The previous prime is 56475121. The next prime is 56475187. The reversal of 56475131 is 13157465.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13157465 = 5 ⋅2631493.

It is a cyclic number.

It is not a de Polignac number, because 56475131 - 2²² = 52280827 is a prime.

It is a super-2 number, since 2×56475131² = 6378880842934322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56475121) 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, 44120 + ... + 45381.

It is an arithmetic number, because the mean of its divisors is an integer number (14141316).

Almost surely, 2^56475131 is an apocalyptic number.

56475131 is a deficient number, since it is larger than the sum of its proper divisors (90133).

56475131 is an equidigital number, since it uses as much as digits as its factorization.

56475131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90132.

The product of its digits is 12600, while the sum is 32.

The square root of 56475131 is about 7514.9937458390. The cubic root of 56475131 is about 383.6652061483.

The spelling of 56475131 in words is "fifty-six million, four hundred seventy-five thousand, one hundred thirty-one".