122553557531 has 2 divisors, whose sum is σ = 122553557532. Its totient is φ = 122553557530.

The previous prime is 122553557527. The next prime is 122553557537. The reversal of 122553557531 is 135755355221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122553557531 - 2² = 122553557527 is a prime.

It is a super-3 number, since 3×122553557531³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (122553557537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61276778765 + 61276778766.

It is an arithmetic number, because the mean of its divisors is an integer number (61276778766).

Almost surely, 2^122553557531 is an apocalyptic number.

122553557531 is a deficient number, since it is larger than the sum of its proper divisors (1).

122553557531 is an equidigital number, since it uses as much as digits as its factorization.

122553557531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 787500, while the sum is 44.

The spelling of 122553557531 in words is "one hundred twenty-two billion, five hundred fifty-three million, five hundred fifty-seven thousand, five hundred thirty-one".