99812255 has 16 divisors (see below), whose sum is σ = 122774400. Its totient is φ = 77862912.

The previous prime is 99812239. The next prime is 99812267. The reversal of 99812255 is 55221899.

It is a cyclic number.

It is not a de Polignac number, because 99812255 - 2⁴ = 99812239 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81407 + ... + 82623.

It is an arithmetic number, because the mean of its divisors is an integer number (7673400).

Almost surely, 2^99812255 is an apocalyptic number.

99812255 is a deficient number, since it is larger than the sum of its proper divisors (22962145).

99812255 is a wasteful number, since it uses less digits than its factorization.

99812255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618.

The product of its digits is 64800, while the sum is 41.

The square root of 99812255 is about 9990.6083398360. The cubic root of 99812255 is about 463.8682230200.

The spelling of 99812255 in words is "ninety-nine million, eight hundred twelve thousand, two hundred fifty-five".