522121157 has 2 divisors, whose sum is σ = 522121158. Its totient is φ = 522121156.

The previous prime is 522121147. The next prime is 522121207. The reversal of 522121157 is 751121225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 515562436 + 6558721 = 22706^2 + 2561^2 .

It is a cyclic number.

It is not a de Polignac number, because 522121157 - 2⁴ = 522121141 is a prime.

It is a super-2 number, since 2×522121157² = 545221005174037298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (522121147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261060578 + 261060579.

It is an arithmetic number, because the mean of its divisors is an integer number (261060579).

Almost surely, 2^522121157 is an apocalyptic number.

It is an amenable number.

522121157 is a deficient number, since it is larger than the sum of its proper divisors (1).

522121157 is an equidigital number, since it uses as much as digits as its factorization.

522121157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1400, while the sum is 26.

The square root of 522121157 is about 22849.9706126726. The cubic root of 522121157 is about 805.2370774018.

The spelling of 522121157 in words is "five hundred twenty-two million, one hundred twenty-one thousand, one hundred fifty-seven".