117955657 has 2 divisors, whose sum is σ = 117955658. Its totient is φ = 117955656.

The previous prime is 117955633. The next prime is 117955697. The reversal of 117955657 is 756559711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105452361 + 12503296 = 10269^2 + 3536^2 .

It is a cyclic number.

It is not a de Polignac number, because 117955657 - 2⁷ = 117955529 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (117955697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58977828 + 58977829.

It is an arithmetic number, because the mean of its divisors is an integer number (58977829).

Almost surely, 2^117955657 is an apocalyptic number.

It is an amenable number.

117955657 is a deficient number, since it is larger than the sum of its proper divisors (1).

117955657 is an equidigital number, since it uses as much as digits as its factorization.

117955657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 330750, while the sum is 46.

The square root of 117955657 is about 10860.7392473993. The cubic root of 117955657 is about 490.4253657463.

The spelling of 117955657 in words is "one hundred seventeen million, nine hundred fifty-five thousand, six hundred fifty-seven".