56171313 has 40 divisors (see below), whose sum is σ = 95553216. Its totient is φ = 32551200.

The previous prime is 56171309. The next prime is 56171321. The reversal of 56171313 is 31317165.

56171313 is a `hidden beast` number, since 561 + 71 + 31 + 3 = 666.

56171313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56171313 - 2² = 56171309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56171333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19123 + ... + 21863.

Almost surely, 2^56171313 is an apocalyptic number.

It is an amenable number.

56171313 is a deficient number, since it is larger than the sum of its proper divisors (39381903).

56171313 is a wasteful number, since it uses less digits than its factorization.

56171313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787 (or 2778 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 56171313 is about 7494.7523641545. The cubic root of 56171313 is about 382.9759703330.

Adding to 56171313 its reverse (31317165), we get a palindrome (87488478).

The spelling of 56171313 in words is "fifty-six million, one hundred seventy-one thousand, three hundred thirteen".