99562321 has 2 divisors, whose sum is σ = 99562322. Its totient is φ = 99562320.

The previous prime is 99562313. The next prime is 99562339. The reversal of 99562321 is 12326599.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90345025 + 9217296 = 9505^2 + 3036^2 .

It is an emirp because it is prime and its reverse (12326599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99562321 - 2³ = 99562313 is a prime.

It is not a weakly prime, because it can be changed into another prime (99562621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49781160 + 49781161.

It is an arithmetic number, because the mean of its divisors is an integer number (49781161).

Almost surely, 2^99562321 is an apocalyptic number.

It is an amenable number.

99562321 is a deficient number, since it is larger than the sum of its proper divisors (1).

99562321 is an equidigital number, since it uses as much as digits as its factorization.

99562321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 37.

The square root of 99562321 is about 9978.0920520909. The cubic root of 99562321 is about 463.4807176809.

The spelling of 99562321 in words is "ninety-nine million, five hundred sixty-two thousand, three hundred twenty-one".