522490889 has 2 divisors, whose sum is σ = 522490890. Its totient is φ = 522490888.

The previous prime is 522490849. The next prime is 522490897. The reversal of 522490889 is 988094225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 373455625 + 149035264 = 19325^2 + 12208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-522490889 is a prime.

It is not a weakly prime, because it can be changed into another prime (522490849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261245444 + 261245445.

It is an arithmetic number, because the mean of its divisors is an integer number (261245445).

Almost surely, 2^522490889 is an apocalyptic number.

It is an amenable number.

522490889 is a deficient number, since it is larger than the sum of its proper divisors (1).

522490889 is an equidigital number, since it uses as much as digits as its factorization.

522490889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 522490889 is about 22858.0596070620. The cubic root of 522490889 is about 805.4271046034.

The spelling of 522490889 in words is "five hundred twenty-two million, four hundred ninety thousand, eight hundred eighty-nine".