56431875971 has 4 divisors (see below), whose sum is σ = 56456445912. Its totient is φ = 56407306032.

The previous prime is 56431875959. The next prime is 56431875991. The reversal of 56431875971 is 17957813465.

It is a happy number.

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 56431875971 - 2¹⁸ = 56431613827 is a prime.

It is a super-3 number, since 3×56431875971³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56431875991) 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, 12281525 + ... + 12286118.

It is an arithmetic number, because the mean of its divisors is an integer number (14114111478).

Almost surely, 2^56431875971 is an apocalyptic number.

56431875971 is a deficient number, since it is larger than the sum of its proper divisors (24569941).

56431875971 is a wasteful number, since it uses less digits than its factorization.

56431875971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24569940.

The product of its digits is 6350400, while the sum is 56.

The spelling of 56431875971 in words is "fifty-six billion, four hundred thirty-one million, eight hundred seventy-five thousand, nine hundred seventy-one".