117861556 has 6 divisors (see below), whose sum is σ = 206257730. Its totient is φ = 58930776.

The previous prime is 117861547. The next prime is 117861563. The reversal of 117861556 is 655168711.

It can be written as a sum of positive squares in only one way, i.e., 87984400 + 29877156 = 9380^2 + 5466^2 .

It is a super-2 number, since 2×117861556² = 27782692765482272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14732691 + ... + 14732698.

Almost surely, 2^117861556 is an apocalyptic number.

It is an amenable number.

117861556 is a deficient number, since it is larger than the sum of its proper divisors (88396174).

117861556 is a wasteful number, since it uses less digits than its factorization.

117861556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29465393 (or 29465391 counting only the distinct ones).

The product of its digits is 50400, while the sum is 40.

The square root of 117861556 is about 10856.4062193711. The cubic root of 117861556 is about 490.2949161742.

The spelling of 117861556 in words is "one hundred seventeen million, eight hundred sixty-one thousand, five hundred fifty-six".