520677491 has 8 divisors (see below), whose sum is σ = 534055200. Its totient is φ = 507332160.

The previous prime is 520677481. The next prime is 520677499. The reversal of 520677491 is 194776025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520677491 - 2¹⁰ = 520676467 is a prime.

It is a super-2 number, since 2×520677491² = 542210099268110162, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520677499) 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, 26330 + ... + 41648.

It is an arithmetic number, because the mean of its divisors is an integer number (66756900).

Almost surely, 2^520677491 is an apocalyptic number.

520677491 is a deficient number, since it is larger than the sum of its proper divisors (13377709).

520677491 is a wasteful number, since it uses less digits than its factorization.

520677491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16189.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 520677491 is about 22818.3586394815. The cubic root of 520677491 is about 804.4942316363.

The spelling of 520677491 in words is "five hundred twenty million, six hundred seventy-seven thousand, four hundred ninety-one".