99524921 has 2 divisors, whose sum is σ = 99524922. Its totient is φ = 99524920.

The previous prime is 99524899. The next prime is 99524927. The reversal of 99524921 is 12942599.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77246521 + 22278400 = 8789^2 + 4720^2 .

It is a cyclic number.

It is not a de Polignac number, because 99524921 - 2¹⁴ = 99508537 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99524927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49762460 + 49762461.

It is an arithmetic number, because the mean of its divisors is an integer number (49762461).

Almost surely, 2^99524921 is an apocalyptic number.

It is an amenable number.

99524921 is a deficient number, since it is larger than the sum of its proper divisors (1).

99524921 is an equidigital number, since it uses as much as digits as its factorization.

99524921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 41.

The square root of 99524921 is about 9976.2177702775. The cubic root of 99524921 is about 463.4226758112.

The spelling of 99524921 in words is "ninety-nine million, five hundred twenty-four thousand, nine hundred twenty-one".