99324581 has 2 divisors, whose sum is σ = 99324582. Its totient is φ = 99324580.

The previous prime is 99324551. The next prime is 99324607. The reversal of 99324581 is 18542399.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60996100 + 38328481 = 7810^2 + 6191^2 .

It is an emirp because it is prime and its reverse (18542399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99324581 - 2⁶ = 99324517 is a prime.

It is a super-2 number, since 2×99324581² = 19730744781651122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99324521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49662290 + 49662291.

It is an arithmetic number, because the mean of its divisors is an integer number (49662291).

Almost surely, 2^99324581 is an apocalyptic number.

It is an amenable number.

99324581 is a deficient number, since it is larger than the sum of its proper divisors (1).

99324581 is an equidigital number, since it uses as much as digits as its factorization.

99324581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 99324581 is about 9966.1718327550. The cubic root of 99324581 is about 463.1115160078. Note that the first 3 decimals are identical.

The spelling of 99324581 in words is "ninety-nine million, three hundred twenty-four thousand, five hundred eighty-one".