55756720553 has 16 divisors (see below), whose sum is σ = 56802686976. Its totient is φ = 54717498000.

The previous prime is 55756720549. The next prime is 55756720583. The reversal of 55756720553 is 35502765755.

It is a cyclic number.

It is not a de Polignac number, because 55756720553 - 2² = 55756720549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55756720583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25308350 + ... + 25310552.

It is an arithmetic number, because the mean of its divisors is an integer number (3550167936).

Almost surely, 2^55756720553 is an apocalyptic number.

It is an amenable number.

55756720553 is a deficient number, since it is larger than the sum of its proper divisors (1045966423).

55756720553 is a wasteful number, since it uses less digits than its factorization.

55756720553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3524.

The product of its (nonzero) digits is 5512500, while the sum is 50.

The spelling of 55756720553 in words is "fifty-five billion, seven hundred fifty-six million, seven hundred twenty thousand, five hundred fifty-three".