56622997 has 4 divisors (see below), whose sum is σ = 57420576. Its totient is φ = 55825420.

The previous prime is 56622991. The next prime is 56623001. The reversal of 56622997 is 79922665.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56622997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56622991) 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, 398683 + ... + 398824.

It is an arithmetic number, because the mean of its divisors is an integer number (14355144).

Almost surely, 2^56622997 is an apocalyptic number.

It is an amenable number.

56622997 is a deficient number, since it is larger than the sum of its proper divisors (797579).

56622997 is an equidigital number, since it uses as much as digits as its factorization.

56622997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797578.

The product of its digits is 408240, while the sum is 46.

The square root of 56622997 is about 7524.8253800337. The cubic root of 56622997 is about 383.9997581198. Note that the first 3 decimals are identical.

The spelling of 56622997 in words is "fifty-six million, six hundred twenty-two thousand, nine hundred ninety-seven".