99521300 has 36 divisors (see below), whose sum is σ = 216548640. Its totient is φ = 39700320.

The previous prime is 99521291. The next prime is 99521327. The reversal of 99521300 is 312599.

It is a super-3 number, since 3×99521300³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42767 + ... + 45033.

It is an arithmetic number, because the mean of its divisors is an integer number (6015240).

Almost surely, 2^99521300 is an apocalyptic number.

It is an amenable number.

99521300 is an abundant number, since it is smaller than the sum of its proper divisors (117027340).

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

99521300 is a wasteful number, since it uses less digits than its factorization.

99521300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2720 (or 2713 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 99521300 is about 9976.0362870230. The cubic root of 99521300 is about 463.4170555309.

Adding to 99521300 its reverse (312599), we get a palindrome (99833899).

The spelling of 99521300 in words is "ninety-nine million, five hundred twenty-one thousand, three hundred".