56554485657 has 32 divisors (see below), whose sum is σ = 78327545856. Its totient is φ = 36258105600.

The previous prime is 56554485653. The next prime is 56554485677. The reversal of 56554485657 is 75658445565.

It is not a de Polignac number, because 56554485657 - 2² = 56554485653 is a prime.

It is a super-3 number, since 3×56554485657³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56554485657.

It is not an unprimeable number, because it can be changed into a prime (56554485653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13333057 + ... + 13337297.

It is an arithmetic number, because the mean of its divisors is an integer number (2447735808).

Almost surely, 2^56554485657 is an apocalyptic number.

It is an amenable number.

56554485657 is a deficient number, since it is larger than the sum of its proper divisors (21773060199).

56554485657 is a wasteful number, since it uses less digits than its factorization.

56554485657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5141.

The product of its digits is 100800000, while the sum is 60.

The spelling of 56554485657 in words is "fifty-six billion, five hundred fifty-four million, four hundred eighty-five thousand, six hundred fifty-seven".