117811451 has 8 divisors (see below), whose sum is σ = 124064160. Its totient is φ = 111652992.

The previous prime is 117811429. The next prime is 117811471. The reversal of 117811451 is 154118711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117811451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117811471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20990 + ... + 26003.

It is an arithmetic number, because the mean of its divisors is an integer number (15508020).

Almost surely, 2^117811451 is an apocalyptic number.

117811451 is a deficient number, since it is larger than the sum of its proper divisors (6252709).

117811451 is a wasteful number, since it uses less digits than its factorization.

117811451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47125.

The product of its digits is 1120, while the sum is 29.

The square root of 117811451 is about 10854.0983503928. The cubic root of 117811451 is about 490.2254286907.

The spelling of 117811451 in words is "one hundred seventeen million, eight hundred eleven thousand, four hundred fifty-one".