100117955 has 16 divisors (see below), whose sum is σ = 137652480. Its totient is φ = 68478432.

The previous prime is 100117951. The next prime is 100117987. The reversal of 100117955 is 559711001.

It is a cyclic number.

It is not a de Polignac number, because 100117955 - 2² = 100117951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100117951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11252 + ... + 18078.

It is an arithmetic number, because the mean of its divisors is an integer number (8603280).

Almost surely, 2^100117955 is an apocalyptic number.

100117955 is a deficient number, since it is larger than the sum of its proper divisors (37534525).

100117955 is an equidigital number, since it uses as much as digits as its factorization.

100117955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7258.

The product of its (nonzero) digits is 1575, while the sum is 29.

The square root of 100117955 is about 10005.8960118522. The cubic root of 100117955 is about 464.3413111894.

Adding to 100117955 its reverse (559711001), we get a palindrome (659828956).

The spelling of 100117955 in words is "one hundred million, one hundred seventeen thousand, nine hundred fifty-five".