118451 has 4 divisors (see below), whose sum is σ = 122304. Its totient is φ = 114600.

The previous prime is 118429. The next prime is 118453. The reversal of 118451 is 154811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154811 = 149 ⋅1039.

It is a cyclic number.

It is not a de Polignac number, because 118451 - 2⁶ = 118387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118453) 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 in 3 ways as a sum of consecutive naturals, for example, 1880 + ... + 1941.

It is an arithmetic number, because the mean of its divisors is an integer number (30576).

2¹¹⁸⁴⁵¹ is an apocalyptic number.

118451 is a deficient number, since it is larger than the sum of its proper divisors (3853).

118451 is an equidigital number, since it uses as much as digits as its factorization.

118451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3852.

The product of its digits is 160, while the sum is 20.

The square root of 118451 is about 344.1671105728. The cubic root of 118451 is about 49.1110904469. Note that the first 3 decimals are identical.

The spelling of 118451 in words is "one hundred eighteen thousand, four hundred fifty-one".