117155047 has 2 divisors, whose sum is σ = 117155048. Its totient is φ = 117155046.

The previous prime is 117155023. The next prime is 117155063. The reversal of 117155047 is 740551711.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (740551711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117155047 - 2²³ = 108766439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117156047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58577523 + 58577524.

It is an arithmetic number, because the mean of its divisors is an integer number (58577524).

Almost surely, 2^117155047 is an apocalyptic number.

117155047 is a deficient number, since it is larger than the sum of its proper divisors (1).

117155047 is an equidigital number, since it uses as much as digits as its factorization.

117155047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4900, while the sum is 31.

The square root of 117155047 is about 10823.8185036520. The cubic root of 117155047 is about 489.3132779268.

The spelling of 117155047 in words is "one hundred seventeen million, one hundred fifty-five thousand, forty-seven".