99365531 has 2 divisors, whose sum is σ = 99365532. Its totient is φ = 99365530.

The previous prime is 99365507. The next prime is 99365537. The reversal of 99365531 is 13556399.

It is a strong prime.

It is an emirp because it is prime and its reverse (13556399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99365531 - 2⁶ = 99365467 is a prime.

It is a super-2 number, since 2×99365531² = 19747017501823922, which contains 22 as substring.

It is a Chen prime.

It is equal to p_5726966 and since 99365531 and 5726966 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (99365537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49682765 + 49682766.

It is an arithmetic number, because the mean of its divisors is an integer number (49682766).

Almost surely, 2^99365531 is an apocalyptic number.

99365531 is a deficient number, since it is larger than the sum of its proper divisors (1).

99365531 is an equidigital number, since it uses as much as digits as its factorization.

99365531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109350, while the sum is 41.

The square root of 99365531 is about 9968.2260708714. The cubic root of 99365531 is about 463.1751518529.

The spelling of 99365531 in words is "ninety-nine million, three hundred sixty-five thousand, five hundred thirty-one".