122555513 has 2 divisors, whose sum is σ = 122555514. Its totient is φ = 122555512.

The previous prime is 122555509. The next prime is 122555591. The reversal of 122555513 is 315555221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71690089 + 50865424 = 8467^2 + 7132^2 .

It is a cyclic number.

It is not a de Polignac number, because 122555513 - 2² = 122555509 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122555413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61277756 + 61277757.

It is an arithmetic number, because the mean of its divisors is an integer number (61277757).

Almost surely, 2^122555513 is an apocalyptic number.

It is an amenable number.

122555513 is a deficient number, since it is larger than the sum of its proper divisors (1).

122555513 is an equidigital number, since it uses as much as digits as its factorization.

122555513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7500, while the sum is 29.

The square root of 122555513 is about 11070.4793482487. The cubic root of 122555513 is about 496.7192038374.

The spelling of 122555513 in words is "one hundred twenty-two million, five hundred fifty-five thousand, five hundred thirteen".