117854451 has 24 divisors (see below), whose sum is σ = 199997616. Its totient is φ = 65931840.

The previous prime is 117854431. The next prime is 117854453. The reversal of 117854451 is 154458711.

It is not a de Polignac number, because 117854451 - 2⁵ = 117854419 is a prime.

It is a super-2 number, since 2×117854451² = 27779343241022802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117854453) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 44500 + ... + 47073.

It is an arithmetic number, because the mean of its divisors is an integer number (8333234).

Almost surely, 2^117854451 is an apocalyptic number.

117854451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117854451 is a deficient number, since it is larger than the sum of its proper divisors (82143165).

117854451 is a wasteful number, since it uses less digits than its factorization.

117854451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91603 (or 91600 counting only the distinct ones).

The product of its digits is 22400, while the sum is 36.

The square root of 117854451 is about 10856.0789882904. The cubic root of 117854451 is about 490.2850638936.

The spelling of 117854451 in words is "one hundred seventeen million, eight hundred fifty-four thousand, four hundred fifty-one".