117282491 has 2 divisors, whose sum is σ = 117282492. Its totient is φ = 117282490.

The previous prime is 117282479. The next prime is 117282493. The reversal of 117282491 is 194282711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117282491 - 2²² = 113088187 is a prime.

Together with 117282493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (117282493) 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, 58641245 + 58641246.

It is an arithmetic number, because the mean of its divisors is an integer number (58641246).

Almost surely, 2^117282491 is an apocalyptic number.

117282491 is a deficient number, since it is larger than the sum of its proper divisors (1).

117282491 is an equidigital number, since it uses as much as digits as its factorization.

117282491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 35.

The square root of 117282491 is about 10829.7041049144. The cubic root of 117282491 is about 489.4906424376.

The spelling of 117282491 in words is "one hundred seventeen million, two hundred eighty-two thousand, four hundred ninety-one".