117249751 has 4 divisors (see below), whose sum is σ = 117306904. Its totient is φ = 117192600.

The previous prime is 117249749. The next prime is 117249773. The reversal of 117249751 is 157942711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117249751 - 2¹ = 117249749 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 117249751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117240751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25380 + ... + 29641.

It is an arithmetic number, because the mean of its divisors is an integer number (29326726).

Almost surely, 2^117249751 is an apocalyptic number.

117249751 is a deficient number, since it is larger than the sum of its proper divisors (57153).

117249751 is an equidigital number, since it uses as much as digits as its factorization.

117249751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57152.

The product of its digits is 17640, while the sum is 37.

The square root of 117249751 is about 10828.1924160960. The cubic root of 117249751 is about 489.4450902699.

The spelling of 117249751 in words is "one hundred seventeen million, two hundred forty-nine thousand, seven hundred fifty-one".