622424557 has 2 divisors, whose sum is σ = 622424558. Its totient is φ = 622424556.

The previous prime is 622424549. The next prime is 622424563. The reversal of 622424557 is 755424226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 458430921 + 163993636 = 21411^2 + 12806^2 .

It is a cyclic number.

It is not a de Polignac number, because 622424557 - 2³ = 622424549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622424057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311212278 + 311212279.

It is an arithmetic number, because the mean of its divisors is an integer number (311212279).

Almost surely, 2^622424557 is an apocalyptic number.

It is an amenable number.

622424557 is a deficient number, since it is larger than the sum of its proper divisors (1).

622424557 is an equidigital number, since it uses as much as digits as its factorization.

622424557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 37.

The square root of 622424557 is about 24948.4379671353. The cubic root of 622424557 is about 853.8119710466.

The spelling of 622424557 in words is "six hundred twenty-two million, four hundred twenty-four thousand, five hundred fifty-seven".