117558257 has 8 divisors (see below), whose sum is σ = 121737000. Its totient is φ = 113387904.

The previous prime is 117558253. The next prime is 117558269. The reversal of 117558257 is 752855711.

It can be written as a sum of positive squares in 4 ways, for example, as 41589601 + 75968656 = 6449^2 + 8716^2 .

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 117558257 - 2² = 117558253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117558253) 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, 43613 + ... + 46229.

It is an arithmetic number, because the mean of its divisors is an integer number (15217125).

Almost surely, 2^117558257 is an apocalyptic number.

It is an amenable number.

117558257 is a deficient number, since it is larger than the sum of its proper divisors (4178743).

117558257 is a wasteful number, since it uses less digits than its factorization.

117558257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4195.

The product of its digits is 98000, while the sum is 41.

The square root of 117558257 is about 10842.4285563706. The cubic root of 117558257 is about 489.8739881437.

The spelling of 117558257 in words is "one hundred seventeen million, five hundred fifty-eight thousand, two hundred fifty-seven".