117857801 has 2 divisors, whose sum is σ = 117857802. Its totient is φ = 117857800.

The previous prime is 117857791. The next prime is 117857833. The reversal of 117857801 is 108758711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85082176 + 32775625 = 9224^2 + 5725^2 .

It is a cyclic number.

It is not a de Polignac number, because 117857801 - 2⁶ = 117857737 is a prime.

It is a super-2 number, since 2×117857801² = 27780922513111202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (117857851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58928900 + 58928901.

It is an arithmetic number, because the mean of its divisors is an integer number (58928901).

Almost surely, 2^117857801 is an apocalyptic number.

It is an amenable number.

117857801 is a deficient number, since it is larger than the sum of its proper divisors (1).

117857801 is an equidigital number, since it uses as much as digits as its factorization.

117857801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15680, while the sum is 38.

The square root of 117857801 is about 10856.2332786285. The cubic root of 117857801 is about 490.2897092828.

The spelling of 117857801 in words is "one hundred seventeen million, eight hundred fifty-seven thousand, eight hundred one".