56557010215 has 4 divisors (see below), whose sum is σ = 67868412264. Its totient is φ = 45245608168.

The previous prime is 56557010179. The next prime is 56557010233. The reversal of 56557010215 is 51201075565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51201075565 = 5 ⋅10240215113.

It is a cyclic number.

It is not a de Polignac number, because 56557010215 - 2²⁷ = 56422792487 is a prime.

It is a super-2 number, since 2×56557010215² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5655701017 + ... + 5655701026.

It is an arithmetic number, because the mean of its divisors is an integer number (16967103066).

Almost surely, 2^56557010215 is an apocalyptic number.

56557010215 is a deficient number, since it is larger than the sum of its proper divisors (11311402049).

56557010215 is a wasteful number, since it uses less digits than its factorization.

56557010215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11311402048.

The product of its (nonzero) digits is 52500, while the sum is 37.

The spelling of 56557010215 in words is "fifty-six billion, five hundred fifty-seven million, ten thousand, two hundred fifteen".