56455555557 has 8 divisors (see below), whose sum is σ = 76549906080. Its totient is φ = 36999121040.

The previous prime is 56455555547. The next prime is 56455555591. The reversal of 56455555557 is 75555555465.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56455555557 - 2¹⁵ = 56455522789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56455555497 and 56455555506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56455555517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159478794 + ... + 159479147.

It is an arithmetic number, because the mean of its divisors is an integer number (9568738260).

Almost surely, 2^56455555557 is an apocalyptic number.

It is an amenable number.

56455555557 is a deficient number, since it is larger than the sum of its proper divisors (20094350523).

56455555557 is a wasteful number, since it uses less digits than its factorization.

56455555557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318958003.

The product of its digits is 65625000, while the sum is 57.

The spelling of 56455555557 in words is "fifty-six billion, four hundred fifty-five million, five hundred fifty-five thousand, five hundred fifty-seven".