99521232 has 20 divisors (see below), whose sum is σ = 257096640. Its totient is φ = 33173728.

The previous prime is 99521209. The next prime is 99521237. The reversal of 99521232 is 23212599.

It is a junction number, because it is equal to n+sod(n) for n = 99521193 and 99521202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99521237) 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, 1036632 + ... + 1036727.

It is an arithmetic number, because the mean of its divisors is an integer number (12854832).

Almost surely, 2^99521232 is an apocalyptic number.

It is an amenable number.

99521232 is an abundant number, since it is smaller than the sum of its proper divisors (157575408).

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

99521232 is a wasteful number, since it uses less digits than its factorization.

99521232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073370 (or 2073364 counting only the distinct ones).

The product of its digits is 9720, while the sum is 33.

The square root of 99521232 is about 9976.0328788552. The cubic root of 99521232 is about 463.4169499844.

The spelling of 99521232 in words is "ninety-nine million, five hundred twenty-one thousand, two hundred thirty-two".