117156563 has 2 divisors, whose sum is σ = 117156564. Its totient is φ = 117156562.

The previous prime is 117156551. The next prime is 117156583. The reversal of 117156563 is 365651711.

It is a weak prime.

It is an emirp because it is prime and its reverse (365651711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117156563 - 2¹⁸ = 116894419 is a prime.

It is not a weakly prime, because it can be changed into another prime (117156583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58578281 + 58578282.

It is an arithmetic number, because the mean of its divisors is an integer number (58578282).

Almost surely, 2^117156563 is an apocalyptic number.

117156563 is a deficient number, since it is larger than the sum of its proper divisors (1).

117156563 is an equidigital number, since it uses as much as digits as its factorization.

117156563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 35.

The square root of 117156563 is about 10823.8885341637. Note that the first 3 decimals coincide. The cubic root of 117156563 is about 489.3153885080.

The spelling of 117156563 in words is "one hundred seventeen million, one hundred fifty-six thousand, five hundred sixty-three".