117587497 has 2 divisors, whose sum is σ = 117587498. Its totient is φ = 117587496.

The previous prime is 117587473. The next prime is 117587501. The reversal of 117587497 is 794785711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59660176 + 57927321 = 7724^2 + 7611^2 .

It is an emirp because it is prime and its reverse (794785711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117587497 - 2²³ = 109198889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117587497.

It is not a weakly prime, because it can be changed into another prime (117587297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58793748 + 58793749.

It is an arithmetic number, because the mean of its divisors is an integer number (58793749).

Almost surely, 2^117587497 is an apocalyptic number.

It is an amenable number.

117587497 is a deficient number, since it is larger than the sum of its proper divisors (1).

117587497 is an equidigital number, since it uses as much as digits as its factorization.

117587497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 493920, while the sum is 49.

The square root of 117587497 is about 10843.7768789292. The cubic root of 117587497 is about 489.9145998607.

The spelling of 117587497 in words is "one hundred seventeen million, five hundred eighty-seven thousand, four hundred ninety-seven".