56521505271 has 16 divisors (see below), whose sum is σ = 93957827328. Its totient is φ = 29361820800.

The previous prime is 56521505237. The next prime is 56521505281. The reversal of 56521505271 is 17250512565.

It is not a de Polignac number, because 56521505271 - 2¹³ = 56521497079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56521505281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122340690 + ... + 122341151.

It is an arithmetic number, because the mean of its divisors is an integer number (5872364208).

Almost surely, 2^56521505271 is an apocalyptic number.

56521505271 is a deficient number, since it is larger than the sum of its proper divisors (37436322057).

56521505271 is a wasteful number, since it uses less digits than its factorization.

56521505271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244681862.

The product of its (nonzero) digits is 105000, while the sum is 39.

The spelling of 56521505271 in words is "fifty-six billion, five hundred twenty-one million, five hundred five thousand, two hundred seventy-one".