491940522 has 12 divisors (see below), whose sum is σ = 1065871170. Its totient is φ = 163980168.

The previous prime is 491940521. The next prime is 491940523. The reversal of 491940522 is 225049194.

491940522 is a `hidden beast` number, since 4 + 91 + 9 + 40 + 522 = 666.

It is an interprime number because it is at equal distance from previous prime (491940521) and next prime (491940523).

It can be written as a sum of positive squares in only one way, i.e., 439363521 + 52577001 = 20961^2 + 7251^2 .

It is not an unprimeable number, because it can be changed into a prime (491940521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13664997 + ... + 13665032.

Almost surely, 2^491940522 is an apocalyptic number.

491940522 is an abundant number, since it is smaller than the sum of its proper divisors (573930648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491940522 is a wasteful number, since it uses less digits than its factorization.

491940522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27330037 (or 27330034 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 491940522 is about 22179.7322346326. The cubic root of 491940522 is about 789.4128639616.

The spelling of 491940522 in words is "four hundred ninety-one million, nine hundred forty thousand, five hundred twenty-two".