117257565 has 32 divisors (see below), whose sum is σ = 198567936. Its totient is φ = 58963520.

The previous prime is 117257563. The next prime is 117257587. The reversal of 117257565 is 565752711.

It is not a de Polignac number, because 117257565 - 2¹ = 117257563 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117257561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22102 + ... + 26888.

It is an arithmetic number, because the mean of its divisors is an integer number (6205248).

Almost surely, 2^117257565 is an apocalyptic number.

117257565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117257565 is a deficient number, since it is larger than the sum of its proper divisors (81310371).

117257565 is a wasteful number, since it uses less digits than its factorization.

117257565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4889.

The product of its digits is 73500, while the sum is 39.

The square root of 117257565 is about 10828.5532274630. The cubic root of 117257565 is about 489.4559628985.

The spelling of 117257565 in words is "one hundred seventeen million, two hundred fifty-seven thousand, five hundred sixty-five".