56494170921 has 4 divisors (see below), whose sum is σ = 75325561232. Its totient is φ = 37662780612.

The previous prime is 56494170919. The next prime is 56494170973. The reversal of 56494170921 is 12907149465.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56494170921 - 2¹ = 56494170919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56494177921) 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, 9415695151 + ... + 9415695156.

It is an arithmetic number, because the mean of its divisors is an integer number (18831390308).

Almost surely, 2^56494170921 is an apocalyptic number.

It is an amenable number.

56494170921 is a deficient number, since it is larger than the sum of its proper divisors (18831390311).

56494170921 is a wasteful number, since it uses less digits than its factorization.

56494170921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18831390310.

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 56494170921 in words is "fifty-six billion, four hundred ninety-four million, one hundred seventy thousand, nine hundred twenty-one".