117479251 has 2 divisors, whose sum is σ = 117479252. Its totient is φ = 117479250.

The previous prime is 117479237. The next prime is 117479267. The reversal of 117479251 is 152974711.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117479251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117479251.

It is not a weakly prime, because it can be changed into another prime (117479291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58739625 + 58739626.

It is an arithmetic number, because the mean of its divisors is an integer number (58739626).

Almost surely, 2^117479251 is an apocalyptic number.

117479251 is a deficient number, since it is larger than the sum of its proper divisors (1).

117479251 is an equidigital number, since it uses as much as digits as its factorization.

117479251 is an evil number, because the sum of its binary digits is even.

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

The square root of 117479251 is about 10838.7845720819. The cubic root of 117479251 is about 489.7642222603.

The spelling of 117479251 in words is "one hundred seventeen million, four hundred seventy-nine thousand, two hundred fifty-one".