491595252 has 24 divisors (see below), whose sum is σ = 1148166432. Its totient is φ = 163706400.

The previous prime is 491595229. The next prime is 491595259. The reversal of 491595252 is 252595194.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491595259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6574 + ... + 32037.

It is an arithmetic number, because the mean of its divisors is an integer number (47840268).

Almost surely, 2^491595252 is an apocalyptic number.

It is an amenable number.

491595252 is an abundant number, since it is smaller than the sum of its proper divisors (656571180).

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

491595252 is a wasteful number, since it uses less digits than its factorization.

491595252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39679 (or 39677 counting only the distinct ones).

The product of its digits is 162000, while the sum is 42.

The square root of 491595252 is about 22171.9474110868. The cubic root of 491595252 is about 789.2281367720.

The spelling of 491595252 in words is "four hundred ninety-one million, five hundred ninety-five thousand, two hundred fifty-two".