56521772499 has 8 divisors (see below), whose sum is σ = 79795443600. Its totient is φ = 35464641536.

The previous prime is 56521772401. The next prime is 56521772509. The reversal of 56521772499 is 99427712565.

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 56521772499 - 2⁸ = 56521772243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56521772399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554134974 + ... + 554135075.

It is an arithmetic number, because the mean of its divisors is an integer number (9974430450).

Almost surely, 2^56521772499 is an apocalyptic number.

56521772499 is a deficient number, since it is larger than the sum of its proper divisors (23273671101).

56521772499 is a wasteful number, since it uses less digits than its factorization.

56521772499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108270069.

The product of its digits is 9525600, while the sum is 57.

The spelling of 56521772499 in words is "fifty-six billion, five hundred twenty-one million, seven hundred seventy-two thousand, four hundred ninety-nine".