520221336 has 16 divisors (see below), whose sum is σ = 1300553400. Its totient is φ = 173407104.

The previous prime is 520221307. The next prime is 520221371. The reversal of 520221336 is 633122025.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 21675889 = 520221336 / (5 + 2 + 0 + 2 + 2 + 1 + 3 + 3 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10837921 + ... + 10837968.

Almost surely, 2^520221336 is an apocalyptic number.

It is an amenable number.

520221336 is an abundant number, since it is smaller than the sum of its proper divisors (780332064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520221336 is a wasteful number, since it uses less digits than its factorization.

520221336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21675898 (or 21675894 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 520221336 is about 22808.3610985095. The cubic root of 520221336 is about 804.2592292974.

The spelling of 520221336 in words is "five hundred twenty million, two hundred twenty-one thousand, three hundred thirty-six".