522979491 has 4 divisors (see below), whose sum is σ = 697305992. Its totient is φ = 348652992.

The previous prime is 522979489. The next prime is 522979511. The reversal of 522979491 is 194979225.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 522979491 - 2¹ = 522979489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 522979491.

It is not an unprimeable number, because it can be changed into a prime (522979411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87163246 + ... + 87163251.

It is an arithmetic number, because the mean of its divisors is an integer number (174326498).

Almost surely, 2^522979491 is an apocalyptic number.

522979491 is a deficient number, since it is larger than the sum of its proper divisors (174326501).

522979491 is a wasteful number, since it uses less digits than its factorization.

522979491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174326500.

The product of its digits is 408240, while the sum is 48.

The square root of 522979491 is about 22868.7448496851. The cubic root of 522979491 is about 805.6780886853.

The spelling of 522979491 in words is "five hundred twenty-two million, nine hundred seventy-nine thousand, four hundred ninety-one".