117556487 has 2 divisors, whose sum is σ = 117556488. Its totient is φ = 117556486.

The previous prime is 117556429. The next prime is 117556501. The reversal of 117556487 is 784655711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117556487 - 2²⁶ = 50447623 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117556687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58778243 + 58778244.

It is an arithmetic number, because the mean of its divisors is an integer number (58778244).

Almost surely, 2^117556487 is an apocalyptic number.

117556487 is a deficient number, since it is larger than the sum of its proper divisors (1).

117556487 is an equidigital number, since it uses as much as digits as its factorization.

117556487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235200, while the sum is 44.

The square root of 117556487 is about 10842.3469322836. The cubic root of 117556487 is about 489.8715295575.

The spelling of 117556487 in words is "one hundred seventeen million, five hundred fifty-six thousand, four hundred eighty-seven".