521072200 has 96 divisors (see below), whose sum is σ = 1327102560. Its totient is φ = 188697600.

The previous prime is 521072197. The next prime is 521072213. The reversal of 521072200 is 2270125.

It is a super-2 number, since 2×521072200² = 543032475225680000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 952327 + ... + 952873.

It is an arithmetic number, because the mean of its divisors is an integer number (13823985).

Almost surely, 2^521072200 is an apocalyptic number.

521072200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521072200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (663551280).

521072200 is an abundant number, since it is smaller than the sum of its proper divisors (806030360).

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

521072200 is a wasteful number, since it uses less digits than its factorization.

521072200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007 (or 998 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 521072200 is about 22827.0059359523. The cubic root of 521072200 is about 804.6974674292.

The spelling of 521072200 in words is "five hundred twenty-one million, seventy-two thousand, two hundred".