117285457 has 2 divisors, whose sum is σ = 117285458. Its totient is φ = 117285456.

The previous prime is 117285409. The next prime is 117285463. The reversal of 117285457 is 754582711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82428241 + 34857216 = 9079^2 + 5904^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117285457 is a prime.

It is not a weakly prime, because it can be changed into another prime (117285407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58642728 + 58642729.

It is an arithmetic number, because the mean of its divisors is an integer number (58642729).

Almost surely, 2^117285457 is an apocalyptic number.

It is an amenable number.

117285457 is a deficient number, since it is larger than the sum of its proper divisors (1).

117285457 is an equidigital number, since it uses as much as digits as its factorization.

117285457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78400, while the sum is 40.

The square root of 117285457 is about 10829.8410422314. The cubic root of 117285457 is about 489.4947687057.

The spelling of 117285457 in words is "one hundred seventeen million, two hundred eighty-five thousand, four hundred fifty-seven".