56553621083 has 4 divisors (see below), whose sum is σ = 56593253640. Its totient is φ = 56513988528.

The previous prime is 56553621073. The next prime is 56553621101. The reversal of 56553621083 is 38012635565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56553621083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56553621073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19814138 + ... + 19816991.

It is an arithmetic number, because the mean of its divisors is an integer number (14148313410).

Almost surely, 2^56553621083 is an apocalyptic number.

56553621083 is a deficient number, since it is larger than the sum of its proper divisors (39632557).

56553621083 is a wasteful number, since it uses less digits than its factorization.

56553621083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39632556.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 56553621083 in words is "fifty-six billion, five hundred fifty-three million, six hundred twenty-one thousand, eighty-three".