520874 has 8 divisors (see below), whose sum is σ = 787428. Its totient is φ = 258400.

The previous prime is 520867. The next prime is 520889. The reversal of 520874 is 478025.

It can be written as a sum of positive squares in 2 ways, for example, as 499849 + 21025 = 707^2 + 145^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677 + ... + 1224.

2⁵²⁰⁸⁷⁴ is an apocalyptic number.

520874 is a deficient number, since it is larger than the sum of its proper divisors (266554).

520874 is a wasteful number, since it uses less digits than its factorization.

520874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 520874 is about 721.7160106302. The cubic root of 520874 is about 80.4595427018.

Adding to 520874 its reverse (478025), we get a palindrome (998899).

Subtracting from 520874 its reverse (478025), we obtain a square (42849 = 207²).

The spelling of 520874 in words is "five hundred twenty thousand, eight hundred seventy-four".