99999055 has 16 divisors (see below), whose sum is σ = 134850240. Its totient is φ = 70633728.

The previous prime is 99999043. The next prime is 99999073. The reversal of 99999055 is 55099999.

It is a cyclic number.

It is not a de Polignac number, because 99999055 - 2⁹ = 99998543 is a prime.

It is a super-2 number, since 2×99999055² = 19999622001786050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 99998987 and 99999005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31950 + ... + 34939.

It is an arithmetic number, because the mean of its divisors is an integer number (8428140).

Almost surely, 2^99999055 is an apocalyptic number.

99999055 is a deficient number, since it is larger than the sum of its proper divisors (34851185).

99999055 is a wasteful number, since it uses less digits than its factorization.

99999055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66930.

The product of its (nonzero) digits is 1476225, while the sum is 55.

The square root of 99999055 is about 9999.9527498884. The cubic root of 99999055 is about 464.1574212562.

The spelling of 99999055 in words is "ninety-nine million, nine hundred ninety-nine thousand, fifty-five".