117878573 has 2 divisors, whose sum is σ = 117878574. Its totient is φ = 117878572.

The previous prime is 117878557. The next prime is 117878587. The reversal of 117878573 is 375878711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73496329 + 44382244 = 8573^2 + 6662^2 .

It is a cyclic number.

It is not a de Polignac number, because 117878573 - 2⁴ = 117878557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117878543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58939286 + 58939287.

It is an arithmetic number, because the mean of its divisors is an integer number (58939287).

Almost surely, 2^117878573 is an apocalyptic number.

It is an amenable number.

117878573 is a deficient number, since it is larger than the sum of its proper divisors (1).

117878573 is an equidigital number, since it uses as much as digits as its factorization.

117878573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 329280, while the sum is 47.

The square root of 117878573 is about 10857.1899218905. The cubic root of 117878573 is about 490.3185115047.

The spelling of 117878573 in words is "one hundred seventeen million, eight hundred seventy-eight thousand, five hundred seventy-three".