523649522 has 18 divisors (see below), whose sum is σ = 863959887. Its totient is φ = 237860700.

The previous prime is 523649509. The next prime is 523649527. The reversal of 523649522 is 225946325.

It can be written as a sum of positive squares in only one way, i.e., 261824761 + 261824761 = 16181^2 + 16181^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=16181.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523649527) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 355247 + ... + 356717.

Almost surely, 2^523649522 is an apocalyptic number.

523649522 is a deficient number, since it is larger than the sum of its proper divisors (340310365).

523649522 is an equidigital number, since it uses as much as digits as its factorization.

523649522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966 (or 1484 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

The square root of 523649522 is about 22883.3896527591. The cubic root of 523649522 is about 806.0220148042.

The spelling of 523649522 in words is "five hundred twenty-three million, six hundred forty-nine thousand, five hundred twenty-two".