520977 has 4 divisors (see below), whose sum is σ = 694640. Its totient is φ = 347316.

The previous prime is 520969. The next prime is 520981. The reversal of 520977 is 779025.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 520977 - 2³ = 520969 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520957) by changing a digit.

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, 86827 + ... + 86832.

It is an arithmetic number, because the mean of its divisors is an integer number (173660).

2⁵²⁰⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

520977 is a deficient number, since it is larger than the sum of its proper divisors (173663).

520977 is a wasteful number, since it uses less digits than its factorization.

520977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173662.

The product of its (nonzero) digits is 4410, while the sum is 30.

The square root of 520977 is about 721.7873648104. The cubic root of 520977 is about 80.4648458313.

The spelling of 520977 in words is "five hundred twenty thousand, nine hundred seventy-seven".