122090557 has 2 divisors, whose sum is σ = 122090558. Its totient is φ = 122090556.

The previous prime is 122090543. The next prime is 122090567. The reversal of 122090557 is 755090221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74287161 + 47803396 = 8619^2 + 6914^2 .

It is an emirp because it is prime and its reverse (755090221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122090557 is a prime.

It is a super-2 number, since 2×122090557² = 29812208217140498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122090567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61045278 + 61045279.

It is an arithmetic number, because the mean of its divisors is an integer number (61045279).

Almost surely, 2^122090557 is an apocalyptic number.

It is an amenable number.

122090557 is a deficient number, since it is larger than the sum of its proper divisors (1).

122090557 is an equidigital number, since it uses as much as digits as its factorization.

122090557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 122090557 is about 11049.4595795451. The cubic root of 122090557 is about 496.0902500642.

The spelling of 122090557 in words is "one hundred twenty-two million, ninety thousand, five hundred fifty-seven".