520455163 has 4 divisors (see below), whose sum is σ = 547847560. Its totient is φ = 493062768.

The previous prime is 520455161. The next prime is 520455167. The reversal of 520455163 is 361554025.

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

It is not a de Polignac number, because 520455163 - 2¹ = 520455161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520455161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13696170 + ... + 13696207.

It is an arithmetic number, because the mean of its divisors is an integer number (136961890).

Almost surely, 2^520455163 is an apocalyptic number.

520455163 is a deficient number, since it is larger than the sum of its proper divisors (27392397).

520455163 is a wasteful number, since it uses less digits than its factorization.

520455163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27392396.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 520455163 is about 22813.4864279882. The cubic root of 520455163 is about 804.3797096527.

The spelling of 520455163 in words is "five hundred twenty million, four hundred fifty-five thousand, one hundred sixty-three".