117386551 has 2 divisors, whose sum is σ = 117386552. Its totient is φ = 117386550.

The previous prime is 117386539. The next prime is 117386561. The reversal of 117386551 is 155683711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117386551 - 2²¹ = 115289399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117386551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117386561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58693275 + 58693276.

It is an arithmetic number, because the mean of its divisors is an integer number (58693276).

Almost surely, 2^117386551 is an apocalyptic number.

117386551 is a deficient number, since it is larger than the sum of its proper divisors (1).

117386551 is an equidigital number, since it uses as much as digits as its factorization.

117386551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 37.

The square root of 117386551 is about 10834.5074184293. The cubic root of 117386551 is about 489.6353680445.

The spelling of 117386551 in words is "one hundred seventeen million, three hundred eighty-six thousand, five hundred fifty-one".