520994 has 8 divisors (see below), whose sum is σ = 784848. Its totient is φ = 259380.

The previous prime is 520981. The next prime is 521009. The reversal of 520994 is 499025.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 520994.

It is an unprimeable number.

520994 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269 + ... + 1055.

It is an arithmetic number, because the mean of its divisors is an integer number (98106).

2⁵²⁰⁹⁹⁴ is an apocalyptic number.

520994 is a deficient number, since it is larger than the sum of its proper divisors (263854).

520994 is a wasteful number, since it uses less digits than its factorization.

520994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 520994 is about 721.7991410358. The cubic root of 520994 is about 80.4657210378.

The spelling of 520994 in words is "five hundred twenty thousand, nine hundred ninety-four".