56622649 has 2 divisors, whose sum is σ = 56622650. Its totient is φ = 56622648.

The previous prime is 56622637. The next prime is 56622661. The reversal of 56622649 is 94622665.

It is a balanced prime because it is at equal distance from previous prime (56622637) and next prime (56622661).

It can be written as a sum of positive squares in only one way, i.e., 52461049 + 4161600 = 7243^2 + 2040^2 .

It is a cyclic number.

It is not a de Polignac number, because 56622649 - 2¹³ = 56614457 is a prime.

It is a super-2 number, since 2×56622649² = 6412248759554402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56622689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28311324 + 28311325.

It is an arithmetic number, because the mean of its divisors is an integer number (28311325).

Almost surely, 2^56622649 is an apocalyptic number.

It is an amenable number.

56622649 is a deficient number, since it is larger than the sum of its proper divisors (1).

56622649 is an equidigital number, since it uses as much as digits as its factorization.

56622649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 40.

The square root of 56622649 is about 7524.8022565380. The cubic root of 56622649 is about 383.9989714418.

The spelling of 56622649 in words is "fifty-six million, six hundred twenty-two thousand, six hundred forty-nine".