56154588971 has 4 divisors (see below), whose sum is σ = 60474172752. Its totient is φ = 51835005192.

The previous prime is 56154588911. The next prime is 56154589009. The reversal of 56154588971 is 17988545165.

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

It is a cyclic number.

It is not a de Polignac number, because 56154588971 - 2⁶ = 56154588907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56154588971.

It is not an unprimeable number, because it can be changed into a prime (56154588911) 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, 2159791871 + ... + 2159791896.

It is an arithmetic number, because the mean of its divisors is an integer number (15118543188).

Almost surely, 2^56154588971 is an apocalyptic number.

56154588971 is a deficient number, since it is larger than the sum of its proper divisors (4319583781).

56154588971 is a wasteful number, since it uses less digits than its factorization.

56154588971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4319583780.

The product of its digits is 12096000, while the sum is 59.

The spelling of 56154588971 in words is "fifty-six billion, one hundred fifty-four million, five hundred eighty-eight thousand, nine hundred seventy-one".