117451 has 4 divisors (see below), whose sum is σ = 119272. Its totient is φ = 115632.

The previous prime is 117443. The next prime is 117497. The reversal of 117451 is 154711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154711 = 131 ⋅1181.

It is a cyclic number.

It is not a de Polignac number, because 117451 - 2³ = 117443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810 + ... + 943.

It is an arithmetic number, because the mean of its divisors is an integer number (29818).

2¹¹⁷⁴⁵¹ is an apocalyptic number.

117451 is a deficient number, since it is larger than the sum of its proper divisors (1821).

117451 is an equidigital number, since it uses as much as digits as its factorization.

117451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820.

The product of its digits is 140, while the sum is 19.

The square root of 117451 is about 342.7112487211. The cubic root of 117451 is about 48.9724960183.

It can be divided in two parts, 1174 and 51, that added together give a triangular number (1225 = T₄₉).

The spelling of 117451 in words is "one hundred seventeen thousand, four hundred fifty-one".