117155387 has 8 divisors (see below), whose sum is σ = 125649360. Its totient is φ = 108894240.

The previous prime is 117155377. The next prime is 117155411. The reversal of 117155387 is 783551711.

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

It is a cyclic number.

It is not a de Polignac number, because 117155387 - 2⁴ = 117155371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117155387.

It is not an unprimeable number, because it can be changed into a prime (117155317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57164 + ... + 59177.

It is an arithmetic number, because the mean of its divisors is an integer number (15706170).

Almost surely, 2^117155387 is an apocalyptic number.

117155387 is a deficient number, since it is larger than the sum of its proper divisors (8493973).

117155387 is a wasteful number, since it uses less digits than its factorization.

117155387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116413.

The product of its digits is 29400, while the sum is 38.

The square root of 117155387 is about 10823.8342097429. The cubic root of 117155387 is about 489.3137512777.

The spelling of 117155387 in words is "one hundred seventeen million, one hundred fifty-five thousand, three hundred eighty-seven".