99005531 has 2 divisors, whose sum is σ = 99005532. Its totient is φ = 99005530.

The previous prime is 99005527. The next prime is 99005549. The reversal of 99005531 is 13550099.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99005531 - 2² = 99005527 is a prime.

It is a super-2 number, since 2×99005531² = 19604190337183922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99005591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49502765 + 49502766.

It is an arithmetic number, because the mean of its divisors is an integer number (49502766).

Almost surely, 2^99005531 is an apocalyptic number.

99005531 is a deficient number, since it is larger than the sum of its proper divisors (1).

99005531 is an equidigital number, since it uses as much as digits as its factorization.

99005531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6075, while the sum is 32.

The square root of 99005531 is about 9950.1523103920. The cubic root of 99005531 is about 462.6151158304.

The spelling of 99005531 in words is "ninety-nine million, five thousand, five hundred thirty-one".