99622531 has 2 divisors, whose sum is σ = 99622532. Its totient is φ = 99622530.

The previous prime is 99622519. The next prime is 99622541. The reversal of 99622531 is 13522699.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99622531 - 2¹⁷ = 99491459 is a prime.

It is a super-2 number, since 2×99622531² = 19849297365691922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99622541) 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 as a sum of consecutive naturals, namely, 49811265 + 49811266.

It is an arithmetic number, because the mean of its divisors is an integer number (49811266).

Almost surely, 2^99622531 is an apocalyptic number.

99622531 is a deficient number, since it is larger than the sum of its proper divisors (1).

99622531 is an equidigital number, since it uses as much as digits as its factorization.

99622531 is an odious number, because the sum of its binary digits is odd.

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

The square root of 99622531 is about 9981.1087059505. The cubic root of 99622531 is about 463.5741283548.

The spelling of 99622531 in words is "ninety-nine million, six hundred twenty-two thousand, five hundred thirty-one".