520162361 has 4 divisors (see below), whose sum is σ = 536941824. Its totient is φ = 503382900.

The previous prime is 520162351. The next prime is 520162393. The reversal of 520162361 is 163261025.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520162361 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 520162361.

It is not an unprimeable number, because it can be changed into a prime (520162351) 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, 8389685 + ... + 8389746.

It is an arithmetic number, because the mean of its divisors is an integer number (134235456).

Almost surely, 2^520162361 is an apocalyptic number.

It is an amenable number.

520162361 is a deficient number, since it is larger than the sum of its proper divisors (16779463).

520162361 is a wasteful number, since it uses less digits than its factorization.

520162361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16779462.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 520162361 is about 22807.0682245658. The cubic root of 520162361 is about 804.2288364773.

The spelling of 520162361 in words is "five hundred twenty million, one hundred sixty-two thousand, three hundred sixty-one".