520163401 has 8 divisors (see below), whose sum is σ = 538391880. Its totient is φ = 501954432.

The previous prime is 520163387. The next prime is 520163419. The reversal of 520163401 is 104361025.

It can be written as a sum of positive squares in 4 ways, for example, as 191684025 + 328479376 = 13845^2 + 18124^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 520163401 - 2²³ = 511774793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520163431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68091 + ... + 75343.

It is an arithmetic number, because the mean of its divisors is an integer number (67298985).

Almost surely, 2^520163401 is an apocalyptic number.

It is an amenable number.

520163401 is a deficient number, since it is larger than the sum of its proper divisors (18228479).

520163401 is a wasteful number, since it uses less digits than its factorization.

520163401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9755.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 520163401 is about 22807.0910245038. The cubic root of 520163401 is about 804.2293724621.

The spelling of 520163401 in words is "five hundred twenty million, one hundred sixty-three thousand, four hundred one".