56622091 has 4 divisors (see below), whose sum is σ = 57550384. Its totient is φ = 55693800.

The previous prime is 56622047. The next prime is 56622103. The reversal of 56622091 is 19022665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19022665 = 5 ⋅3804533.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56622091 is a prime.

It is a super-2 number, since 2×56622091² = 6412122378424562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56622001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464055 + ... + 464176.

It is an arithmetic number, because the mean of its divisors is an integer number (14387596).

Almost surely, 2^56622091 is an apocalyptic number.

56622091 is a deficient number, since it is larger than the sum of its proper divisors (928293).

56622091 is an equidigital number, since it uses as much as digits as its factorization.

56622091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928292.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 56622091 is about 7524.7651790604. The cubic root of 56622091 is about 383.9977100377.

The spelling of 56622091 in words is "fifty-six million, six hundred twenty-two thousand, ninety-one".