56956971 has 4 divisors (see below), whose sum is σ = 75942632. Its totient is φ = 37971312.

The previous prime is 56956967. The next prime is 56956973. The reversal of 56956971 is 17965965.

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

It is not a de Polignac number, because 56956971 - 2² = 56956967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56956971.

It is not an unprimeable number, because it can be changed into a prime (56956973) 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, 9492826 + ... + 9492831.

It is an arithmetic number, because the mean of its divisors is an integer number (18985658).

Almost surely, 2^56956971 is an apocalyptic number.

56956971 is a deficient number, since it is larger than the sum of its proper divisors (18985661).

56956971 is a wasteful number, since it uses less digits than its factorization.

56956971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18985660.

The product of its digits is 510300, while the sum is 48.

The square root of 56956971 is about 7546.9842321288. The cubic root of 56956971 is about 384.7532483077.

The spelling of 56956971 in words is "fifty-six million, nine hundred fifty-six thousand, nine hundred seventy-one".