117917151 has 16 divisors (see below), whose sum is σ = 181605888. Its totient is φ = 67260800.

The previous prime is 117917143. The next prime is 117917171. The reversal of 117917151 is 151719711.

It is a cyclic number.

It is not a de Polignac number, because 117917151 - 2³ = 117917143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117917101) 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, 104535 + ... + 105656.

It is an arithmetic number, because the mean of its divisors is an integer number (11350368).

Almost surely, 2^117917151 is an apocalyptic number.

117917151 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117917151 is a deficient number, since it is larger than the sum of its proper divisors (63688737).

117917151 is a wasteful number, since it uses less digits than its factorization.

117917151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210222.

The product of its digits is 2205, while the sum is 33.

The square root of 117917151 is about 10858.9663872765. The cubic root of 117917151 is about 490.3719943499.

The spelling of 117917151 in words is "one hundred seventeen million, nine hundred seventeen thousand, one hundred fifty-one".