122557613 has 2 divisors, whose sum is σ = 122557614. Its totient is φ = 122557612.

The previous prime is 122557577. The next prime is 122557621. The reversal of 122557613 is 316755221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112741924 + 9815689 = 10618^2 + 3133^2 .

It is a cyclic number.

It is not a de Polignac number, because 122557613 - 2¹⁶ = 122492077 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122557613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122557013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61278806 + 61278807.

It is an arithmetic number, because the mean of its divisors is an integer number (61278807).

Almost surely, 2^122557613 is an apocalyptic number.

It is an amenable number.

122557613 is a deficient number, since it is larger than the sum of its proper divisors (1).

122557613 is an equidigital number, since it uses as much as digits as its factorization.

122557613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 32.

The square root of 122557613 is about 11070.5741946839. The cubic root of 122557613 is about 496.7220409310.

The spelling of 122557613 in words is "one hundred twenty-two million, five hundred fifty-seven thousand, six hundred thirteen".