99521822 has 4 divisors (see below), whose sum is σ = 149282736. Its totient is φ = 49760910.

The previous prime is 99521803. The next prime is 99521827. The reversal of 99521822 is 22812599.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99521827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24880454 + ... + 24880457.

It is an arithmetic number, because the mean of its divisors is an integer number (37320684).

Almost surely, 2^99521822 is an apocalyptic number.

99521822 is a deficient number, since it is larger than the sum of its proper divisors (49760914).

99521822 is a wasteful number, since it uses less digits than its factorization.

99521822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49760913.

The product of its digits is 25920, while the sum is 38.

The square root of 99521822 is about 9976.0624496842. The cubic root of 99521822 is about 463.4178657537.

The spelling of 99521822 in words is "ninety-nine million, five hundred twenty-one thousand, eight hundred twenty-two".