520577 has 4 divisors (see below), whose sum is σ = 533316. Its totient is φ = 507840.

The previous prime is 520571. The next prime is 520589. The reversal of 520577 is 775025.

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

It can be written as a sum of positive squares in 2 ways, for example, as 59536 + 461041 = 244^2 + 679^2 .

It is a cyclic number.

It is not a de Polignac number, because 520577 - 2¹⁰ = 519553 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6308 + ... + 6389.

It is an arithmetic number, because the mean of its divisors is an integer number (133329).

2⁵²⁰⁵⁷⁷ is an apocalyptic number.

It is an amenable number.

520577 is a deficient number, since it is larger than the sum of its proper divisors (12739).

520577 is a wasteful number, since it uses less digits than its factorization.

520577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12738.

The product of its (nonzero) digits is 2450, while the sum is 26.

The square root of 520577 is about 721.5102216878. The cubic root of 520577 is about 80.4442472385. Note that the first 3 decimals are identical.

The spelling of 520577 in words is "five hundred twenty thousand, five hundred seventy-seven".