99075281 has 4 divisors (see below), whose sum is σ = 102491700. Its totient is φ = 95658864.

The previous prime is 99075257. The next prime is 99075289. The reversal of 99075281 is 18257099.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43349056 + 55726225 = 6584^2 + 7465^2 .

It is a cyclic number.

It is not a de Polignac number, because 99075281 - 2¹⁰ = 99074257 is a prime.

It is a super-2 number, since 2×99075281² = 19631822610457922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99075289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1708166 + ... + 1708223.

It is an arithmetic number, because the mean of its divisors is an integer number (25622925).

Almost surely, 2^99075281 is an apocalyptic number.

It is an amenable number.

99075281 is a deficient number, since it is larger than the sum of its proper divisors (3416419).

99075281 is a wasteful number, since it uses less digits than its factorization.

99075281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3416418.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 99075281 is about 9953.6566647640. The cubic root of 99075281 is about 462.7237287178.

The spelling of 99075281 in words is "ninety-nine million, seventy-five thousand, two hundred eighty-one".