520444287 has 12 divisors (see below), whose sum is σ = 820094184. Its totient is φ = 315420720.

The previous prime is 520444277. The next prime is 520444291. The reversal of 520444287 is 782444025.

520444287 is a `hidden beast` number, since 5 + 204 + 442 + 8 + 7 = 666.

It is not a de Polignac number, because 520444287 - 2⁷ = 520444159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520444277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2628408 + ... + 2628605.

It is an arithmetic number, because the mean of its divisors is an integer number (68341182).

Almost surely, 2^520444287 is an apocalyptic number.

520444287 is a deficient number, since it is larger than the sum of its proper divisors (299649897).

520444287 is a wasteful number, since it uses less digits than its factorization.

520444287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5257030 (or 5257027 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 520444287 is about 22813.2480589678. The cubic root of 520444287 is about 804.3741065477.

The spelling of 520444287 in words is "five hundred twenty million, four hundred forty-four thousand, two hundred eighty-seven".