521325199 has 16 divisors (see below), whose sum is σ = 566899200. Its totient is φ = 477914976.

The previous prime is 521325169. The next prime is 521325283. The reversal of 521325199 is 991523125.

It is not a de Polignac number, because 521325199 - 2⁷ = 521325071 is a prime.

It is a super-2 number, since 2×521325199² = 543559926224779202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521325169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89902 + ... + 95524.

It is an arithmetic number, because the mean of its divisors is an integer number (35431200).

Almost surely, 2^521325199 is an apocalyptic number.

521325199 is a deficient number, since it is larger than the sum of its proper divisors (45574001).

521325199 is a wasteful number, since it uses less digits than its factorization.

521325199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5814.

The product of its digits is 24300, while the sum is 37.

The square root of 521325199 is about 22832.5469231972. The cubic root of 521325199 is about 804.8276827262.

The spelling of 521325199 in words is "five hundred twenty-one million, three hundred twenty-five thousand, one hundred ninety-nine".