520012587 has 4 divisors (see below), whose sum is σ = 693350120. Its totient is φ = 346675056.

The previous prime is 520012579. The next prime is 520012613. The reversal of 520012587 is 785210025.

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

It is not a de Polignac number, because 520012587 - 2³ = 520012579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520012517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86668762 + ... + 86668767.

It is an arithmetic number, because the mean of its divisors is an integer number (173337530).

Almost surely, 2^520012587 is an apocalyptic number.

520012587 is a deficient number, since it is larger than the sum of its proper divisors (173337533).

520012587 is a wasteful number, since it uses less digits than its factorization.

520012587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173337532.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 520012587 is about 22803.7844885449. The cubic root of 520012587 is about 804.1516399828.

The spelling of 520012587 in words is "five hundred twenty million, twelve thousand, five hundred eighty-seven".