56057171553 has 8 divisors (see below), whose sum is σ = 83047661600. Its totient is φ = 37371447684.

The previous prime is 56057171551. The next prime is 56057171561. The reversal of 56057171553 is 35517175065.

56057171553 is a `hidden beast` number, since 5 + 6 + 0 + 571 + 71 + 5 + 5 + 3 = 666.

It is not a de Polignac number, because 56057171553 - 2¹ = 56057171551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56057171499 and 56057171508.

It is not an unprimeable number, because it can be changed into a prime (56057171551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1038095743 + ... + 1038095796.

It is an arithmetic number, because the mean of its divisors is an integer number (10380957700).

Almost surely, 2^56057171553 is an apocalyptic number.

It is an amenable number.

56057171553 is a deficient number, since it is larger than the sum of its proper divisors (26990490047).

56057171553 is a wasteful number, since it uses less digits than its factorization.

56057171553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2076191548 (or 2076191542 counting only the distinct ones).

The product of its (nonzero) digits is 551250, while the sum is 45.

The spelling of 56057171553 in words is "fifty-six billion, fifty-seven million, one hundred seventy-one thousand, five hundred fifty-three".