99081577 has 12 divisors (see below), whose sum is σ = 115702020. Its totient is φ = 84600096.

The previous prime is 99081569. The next prime is 99081581. The reversal of 99081577 is 77518099.

It can be written as a sum of positive squares in 2 ways, for example, as 49787136 + 49294441 = 7056^2 + 7021^2 .

It is not a de Polignac number, because 99081577 - 2³ = 99081569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99081517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9423 + ... + 16939.

It is an arithmetic number, because the mean of its divisors is an integer number (9641835).

Almost surely, 2^99081577 is an apocalyptic number.

It is an amenable number.

99081577 is a deficient number, since it is larger than the sum of its proper divisors (16620443).

99081577 is a wasteful number, since it uses less digits than its factorization.

99081577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7800 (or 7793 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 46.

The square root of 99081577 is about 9953.9729254203. The cubic root of 99081577 is about 462.7335301767.

The spelling of 99081577 in words is "ninety-nine million, eighty-one thousand, five hundred seventy-seven".