117732491 has 2 divisors, whose sum is σ = 117732492. Its totient is φ = 117732490.

The previous prime is 117732403. The next prime is 117732521. The reversal of 117732491 is 194237711.

It is a strong prime.

It is an emirp because it is prime and its reverse (194237711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117732491 - 2¹⁴ = 117716107 is a prime.

It is not a weakly prime, because it can be changed into another prime (117732401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58866245 + 58866246.

It is an arithmetic number, because the mean of its divisors is an integer number (58866246).

Almost surely, 2^117732491 is an apocalyptic number.

117732491 is a deficient number, since it is larger than the sum of its proper divisors (1).

117732491 is an equidigital number, since it uses as much as digits as its factorization.

117732491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 35.

The square root of 117732491 is about 10850.4604049782. The cubic root of 117732491 is about 490.1158840173.

The spelling of 117732491 in words is "one hundred seventeen million, seven hundred thirty-two thousand, four hundred ninety-one".