117172453 has 4 divisors (see below), whose sum is σ = 119383308. Its totient is φ = 114961600.

The previous prime is 117172427. The next prime is 117172459. The reversal of 117172453 is 354271711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 354271711 = 43 ⋅8238877.

It can be written as a sum of positive squares in 2 ways, for example, as 69189124 + 47983329 = 8318^2 + 6927^2 .

It is a cyclic number.

It is not a de Polignac number, because 117172453 - 2⁹ = 117171941 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 (117172459) 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, 1105348 + ... + 1105453.

It is an arithmetic number, because the mean of its divisors is an integer number (29845827).

Almost surely, 2^117172453 is an apocalyptic number.

It is an amenable number.

117172453 is a deficient number, since it is larger than the sum of its proper divisors (2210855).

117172453 is an equidigital number, since it uses as much as digits as its factorization.

117172453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2210854.

The product of its digits is 5880, while the sum is 31.

The square root of 117172453 is about 10824.6225338346. The cubic root of 117172453 is about 489.3375095337.

The spelling of 117172453 in words is "one hundred seventeen million, one hundred seventy-two thousand, four hundred fifty-three".