56922022081 has 4 divisors (see below), whose sum is σ = 59917918000. Its totient is φ = 53926126164.

The previous prime is 56922022067. The next prime is 56922022099. The reversal of 56922022081 is 18022022965.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18022022965 = 5 ⋅3604404593.

It is a cyclic number.

It is not a de Polignac number, because 56922022081 - 2⁷ = 56922021953 is a prime.

It is a super-2 number, since 2×56922022081² (a number of 22 digits) contains 22 as substring.

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 56922022081.

It is not an unprimeable number, because it can be changed into a prime (56922022051) 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, 1497947931 + ... + 1497947968.

It is an arithmetic number, because the mean of its divisors is an integer number (14979479500).

Almost surely, 2^56922022081 is an apocalyptic number.

It is an amenable number.

56922022081 is a deficient number, since it is larger than the sum of its proper divisors (2995895919).

56922022081 is a wasteful number, since it uses less digits than its factorization.

56922022081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2995895918.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 56922022081 in words is "fifty-six billion, nine hundred twenty-two million, twenty-two thousand, eighty-one".