18117055 has 8 divisors (see below), whose sum is σ = 23716944. Its totient is φ = 13176000.

The previous prime is 18117041. The next prime is 18117101. The reversal of 18117055 is 55071181.

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

It is not a de Polignac number, because 18117055 - 2⁵ = 18117023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164646 + ... + 164755.

It is an arithmetic number, because the mean of its divisors is an integer number (2964618).

Almost surely, 2^18117055 is an apocalyptic number.

18117055 is a deficient number, since it is larger than the sum of its proper divisors (5599889).

18117055 is a wasteful number, since it uses less digits than its factorization.

18117055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329417.

The product of its (nonzero) digits is 1400, while the sum is 28.

The square root of 18117055 is about 4256.4133962763. The cubic root of 18117055 is about 262.6410066307.

The spelling of 18117055 in words is "eighteen million, one hundred seventeen thousand, fifty-five".