117951557 has 8 divisors (see below), whose sum is σ = 120838176. Its totient is φ = 115098192.

The previous prime is 117951551. The next prime is 117951569. The reversal of 117951557 is 755159711.

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 117951557 - 2⁴ = 117951541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117951551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1058 + ... + 15395.

It is an arithmetic number, because the mean of its divisors is an integer number (15104772).

Almost surely, 2^117951557 is an apocalyptic number.

It is an amenable number.

117951557 is a deficient number, since it is larger than the sum of its proper divisors (2886619).

117951557 is a wasteful number, since it uses less digits than its factorization.

117951557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16627.

The product of its digits is 55125, while the sum is 41.

The square root of 117951557 is about 10860.5504924935. The cubic root of 117951557 is about 490.4196834774.

The spelling of 117951557 in words is "one hundred seventeen million, nine hundred fifty-one thousand, five hundred fifty-seven".