117305251 has 8 divisors (see below), whose sum is σ = 134563680. Its totient is φ = 100171968.

The previous prime is 117305231. The next prime is 117305269. The reversal of 117305251 is 152503711.

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 117305251 - 2¹⁵ = 117272483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117305231) 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, 29266 + ... + 33031.

It is an arithmetic number, because the mean of its divisors is an integer number (16820460).

Almost surely, 2^117305251 is an apocalyptic number.

117305251 is a deficient number, since it is larger than the sum of its proper divisors (17258429).

117305251 is an equidigital number, since it uses as much as digits as its factorization.

117305251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62573.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 117305251 is about 10830.7548675058. The cubic root of 117305251 is about 489.5223041299.

Adding to 117305251 its reverse (152503711), we get a palindrome (269808962).

The spelling of 117305251 in words is "one hundred seventeen million, three hundred five thousand, two hundred fifty-one".