99095581 has 8 divisors (see below), whose sum is σ = 110398680. Its totient is φ = 88318272.

The previous prime is 99095573. The next prime is 99095587. The reversal of 99095581 is 18559099.

It can be written as a sum of positive squares in 4 ways, for example, as 2859481 + 96236100 = 1691^2 + 9810^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99095581 - 2³ = 99095573 is a prime.

It is a super-2 number, since 2×99095581² = 19639868347455122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99095587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131050 + ... + 131803.

It is an arithmetic number, because the mean of its divisors is an integer number (13799835).

Almost surely, 2^99095581 is an apocalyptic number.

It is an amenable number.

99095581 is a deficient number, since it is larger than the sum of its proper divisors (11303099).

99095581 is a wasteful number, since it uses less digits than its factorization.

99095581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262895.

The product of its (nonzero) digits is 145800, while the sum is 46.

The square root of 99095581 is about 9954.6763382844. The cubic root of 99095581 is about 462.7553297728.

The spelling of 99095581 in words is "ninety-nine million, ninety-five thousand, five hundred eighty-one".