520995 has 16 divisors (see below), whose sum is σ = 852480. Its totient is φ = 271584.

The previous prime is 520981. The next prime is 521009. The reversal of 520995 is 599025.

It is an interprime number because it is at equal distance from previous prime (520981) and next prime (521009).

It is not a de Polignac number, because 520995 - 2⁵ = 520963 is a prime.

520995 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336 + ... + 1074.

It is an arithmetic number, because the mean of its divisors is an integer number (53280).

2⁵²⁰⁹⁹⁵ is an apocalyptic number.

520995 is a deficient number, since it is larger than the sum of its proper divisors (331485).

520995 is a wasteful number, since it uses less digits than its factorization.

520995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794.

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 520995 is about 721.7998337489. The cubic root of 520995 is about 80.4657725200.

The spelling of 520995 in words is "five hundred twenty thousand, nine hundred ninety-five".