56719971 has 24 divisors (see below), whose sum is σ = 102146304. Its totient is φ = 29464560.

The previous prime is 56719963. The next prime is 56719981. The reversal of 56719971 is 17991765.

56719971 is a `hidden beast` number, since 567 + 19 + 9 + 71 = 666.

It is not a de Polignac number, because 56719971 - 2³ = 56719963 is a prime.

It is a super-2 number, since 2×56719971² = 6434310220481682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56719931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40231 + ... + 41616.

It is an arithmetic number, because the mean of its divisors is an integer number (4256096).

Almost surely, 2^56719971 is an apocalyptic number.

56719971 is a deficient number, since it is larger than the sum of its proper divisors (45426333).

56719971 is a wasteful number, since it uses less digits than its factorization.

56719971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81871 (or 81868 counting only the distinct ones).

The product of its digits is 119070, while the sum is 45.

The square root of 56719971 is about 7531.2662281983. The cubic root of 56719971 is about 384.2188490456.

It can be divided in two parts, 56 and 719971, that added together give a palindrome (720027).

The spelling of 56719971 in words is "fifty-six million, seven hundred nineteen thousand, nine hundred seventy-one".