56570431 has 4 divisors (see below), whose sum is σ = 56781000. Its totient is φ = 56359864.

The previous prime is 56570419. The next prime is 56570461. The reversal of 56570431 is 13407565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56570431 - 2¹⁷ = 56439359 is a prime.

It is a super-2 number, since 2×56570431² = 6400427327051522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56570393 and 56570402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56570461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104881 + ... + 105418.

It is an arithmetic number, because the mean of its divisors is an integer number (14195250).

Almost surely, 2^56570431 is an apocalyptic number.

56570431 is a deficient number, since it is larger than the sum of its proper divisors (210569).

56570431 is a wasteful number, since it uses less digits than its factorization.

56570431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210568.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 56570431 is about 7521.3317304850. The cubic root of 56570431 is about 383.8808925120.

Adding to 56570431 its reverse (13407565), we get a palindrome (69977996).

The spelling of 56570431 in words is "fifty-six million, five hundred seventy thousand, four hundred thirty-one".