520974 has 24 divisors (see below), whose sum is σ = 1143792. Its totient is φ = 171360.

The previous prime is 520969. The next prime is 520981. The reversal of 520974 is 479025.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

520974 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1714 + ... + 1994.

It is an arithmetic number, because the mean of its divisors is an integer number (47658).

2⁵²⁰⁹⁷⁴ is an apocalyptic number.

520974 is an abundant number, since it is smaller than the sum of its proper divisors (622818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520974 is a wasteful number, since it uses less digits than its factorization.

520974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 520974 is about 721.7852866331. The cubic root of 520974 is about 80.4646913811.

Adding to 520974 its reverse (479025), we get a palindrome (999999).

The spelling of 520974 in words is "five hundred twenty thousand, nine hundred seventy-four".