99762521 has 4 divisors (see below), whose sum is σ = 105013200. Its totient is φ = 94511844.

The previous prime is 99762499. The next prime is 99762539. The reversal of 99762521 is 12526799.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 99762521 - 2²² = 95568217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99762541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2625311 + ... + 2625348.

It is an arithmetic number, because the mean of its divisors is an integer number (26253300).

Almost surely, 2^99762521 is an apocalyptic number.

It is an amenable number.

99762521 is a deficient number, since it is larger than the sum of its proper divisors (5250679).

99762521 is a wasteful number, since it uses less digits than its factorization.

99762521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5250678.

The product of its digits is 68040, while the sum is 41.

The square root of 99762521 is about 9988.1189920825. The cubic root of 99762521 is about 463.7911654984.

The spelling of 99762521 in words is "ninety-nine million, seven hundred sixty-two thousand, five hundred twenty-one".