99976531 has 2 divisors, whose sum is σ = 99976532. Its totient is φ = 99976530.

The previous prime is 99976523. The next prime is 99976549. The reversal of 99976531 is 13567999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99976531 - 2³ = 99976523 is a prime.

It is a super-2 number, since 2×99976531² = 19990613501587922, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (99976511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49988265 + 49988266.

It is an arithmetic number, because the mean of its divisors is an integer number (49988266).

Almost surely, 2^99976531 is an apocalyptic number.

99976531 is a deficient number, since it is larger than the sum of its proper divisors (1).

99976531 is an equidigital number, since it uses as much as digits as its factorization.

99976531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 459270, while the sum is 49.

The square root of 99976531 is about 9998.8264811427. The cubic root of 99976531 is about 464.1225693708.

The spelling of 99976531 in words is "ninety-nine million, nine hundred seventy-six thousand, five hundred thirty-one".