491580975 has 12 divisors (see below), whose sum is σ = 812747336. Its totient is φ = 262176480.

The previous prime is 491580967. The next prime is 491580983. The reversal of 491580975 is 579085194.

It is an interprime number because it is at equal distance from previous prime (491580967) and next prime (491580983).

It is not a de Polignac number, because 491580975 - 2³ = 491580967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3277132 + ... + 3277281.

Almost surely, 2^491580975 is an apocalyptic number.

491580975 is a deficient number, since it is larger than the sum of its proper divisors (321166361).

491580975 is a wasteful number, since it uses less digits than its factorization.

491580975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6554426 (or 6554421 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 48.

The square root of 491580975 is about 22171.6254478556. The cubic root of 491580975 is about 789.2204963950.

The spelling of 491580975 in words is "four hundred ninety-one million, five hundred eighty thousand, nine hundred seventy-five".