56516571 has 6 divisors (see below), whose sum is σ = 81635060. Its totient is φ = 37677708.

The previous prime is 56516549. The next prime is 56516591. The reversal of 56516571 is 17561565.

It is not a de Polignac number, because 56516571 - 2⁹ = 56516059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56516531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3139801 + ... + 3139818.

Almost surely, 2^56516571 is an apocalyptic number.

56516571 is a deficient number, since it is larger than the sum of its proper divisors (25118489).

56516571 is a wasteful number, since it uses less digits than its factorization.

56516571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6279625 (or 6279622 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 56516571 is about 7517.7503948987. The cubic root of 56516571 is about 383.7590244282.

The spelling of 56516571 in words is "fifty-six million, five hundred sixteen thousand, five hundred seventy-one".