117291497 has 2 divisors, whose sum is σ = 117291498. Its totient is φ = 117291496.

The previous prime is 117291463. The next prime is 117291511. The reversal of 117291497 is 794192711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116553616 + 737881 = 10796^2 + 859^2 .

It is a cyclic number.

It is not a de Polignac number, because 117291497 - 2⁸ = 117291241 is a prime.

It is not a weakly prime, because it can be changed into another prime (117291407) 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, 58645748 + 58645749.

It is an arithmetic number, because the mean of its divisors is an integer number (58645749).

Almost surely, 2^117291497 is an apocalyptic number.

It is an amenable number.

117291497 is a deficient number, since it is larger than the sum of its proper divisors (1).

117291497 is an equidigital number, since it uses as much as digits as its factorization.

117291497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 41.

The square root of 117291497 is about 10830.1198977666. The cubic root of 117291497 is about 489.5031712753.

The spelling of 117291497 in words is "one hundred seventeen million, two hundred ninety-one thousand, four hundred ninety-seven".