122553631 has 2 divisors, whose sum is σ = 122553632. Its totient is φ = 122553630.

The previous prime is 122553619. The next prime is 122553661. The reversal of 122553631 is 136355221.

It is a weak prime.

It is an emirp because it is prime and its reverse (136355221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122553631 - 2¹³ = 122545439 is a prime.

It is a super-2 number, since 2×122553631² = 30038784942568322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122553631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122553601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61276815 + 61276816.

It is an arithmetic number, because the mean of its divisors is an integer number (61276816).

Almost surely, 2^122553631 is an apocalyptic number.

122553631 is a deficient number, since it is larger than the sum of its proper divisors (1).

122553631 is an equidigital number, since it uses as much as digits as its factorization.

122553631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 28.

The square root of 122553631 is about 11070.3943470863. The cubic root of 122553631 is about 496.7166612337.

The spelling of 122553631 in words is "one hundred twenty-two million, five hundred fifty-three thousand, six hundred thirty-one".