56515071 has 16 divisors (see below), whose sum is σ = 78960384. Its totient is φ = 35887104.

The previous prime is 56515061. The next prime is 56515073. The reversal of 56515071 is 17051565.

It is not a de Polignac number, because 56515071 - 2⁶ = 56515007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56515073) 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 15 ways as a sum of consecutive naturals, for example, 16140 + ... + 19326.

It is an arithmetic number, because the mean of its divisors is an integer number (4935024).

Almost surely, 2^56515071 is an apocalyptic number.

56515071 is a deficient number, since it is larger than the sum of its proper divisors (22445313).

56515071 is a wasteful number, since it uses less digits than its factorization.

56515071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3470.

The product of its (nonzero) digits is 5250, while the sum is 30.

The square root of 56515071 is about 7517.6506303499. The cubic root of 56515071 is about 383.7556292963.

The spelling of 56515071 in words is "fifty-six million, five hundred fifteen thousand, seventy-one".