118551 has 8 divisors (see below), whose sum is σ = 161920. Its totient is φ = 77112.

The previous prime is 118549. The next prime is 118571. The reversal of 118551 is 155811.

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

It is not a de Polignac number, because 118551 - 2¹ = 118549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118571) 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 7 ways as a sum of consecutive naturals, for example, 331 + ... + 588.

It is an arithmetic number, because the mean of its divisors is an integer number (20240).

2¹¹⁸⁵⁵¹ is an apocalyptic number.

118551 is a deficient number, since it is larger than the sum of its proper divisors (43369).

118551 is an equidigital number, since it uses as much as digits as its factorization.

118551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965.

The product of its digits is 200, while the sum is 21.

The square root of 118551 is about 344.3123581866. The cubic root of 118551 is about 49.1249069270.

The spelling of 118551 in words is "one hundred eighteen thousand, five hundred fifty-one".