117445457 has 2 divisors, whose sum is σ = 117445458. Its totient is φ = 117445456.

The previous prime is 117445451. The next prime is 117445477. The reversal of 117445457 is 754544711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82882816 + 34562641 = 9104^2 + 5879^2 .

It is a cyclic number.

It is not a de Polignac number, because 117445457 - 2²⁰ = 116396881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117445457.

It is not a weakly prime, because it can be changed into another prime (117445451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58722728 + 58722729.

It is an arithmetic number, because the mean of its divisors is an integer number (58722729).

Almost surely, 2^117445457 is an apocalyptic number.

It is an amenable number.

117445457 is a deficient number, since it is larger than the sum of its proper divisors (1).

117445457 is an equidigital number, since it uses as much as digits as its factorization.

117445457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78400, while the sum is 38.

The square root of 117445457 is about 10837.2255213223. The cubic root of 117445457 is about 489.7172560109.

The spelling of 117445457 in words is "one hundred seventeen million, four hundred forty-five thousand, four hundred fifty-seven".