118171553 has 8 divisors (see below), whose sum is σ = 121546656. Its totient is φ = 114820000.

The previous prime is 118171541. The next prime is 118171567. The reversal of 118171553 is 355171811.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 118171553 - 2¹² = 118167457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118171523) 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 7 ways as a sum of consecutive naturals, for example, 4550 + ... + 16032.

It is an arithmetic number, because the mean of its divisors is an integer number (15193332).

Almost surely, 2^118171553 is an apocalyptic number.

It is an amenable number.

118171553 is a deficient number, since it is larger than the sum of its proper divisors (3375103).

118171553 is a wasteful number, since it uses less digits than its factorization.

118171553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11775.

The product of its digits is 4200, while the sum is 32.

The square root of 118171553 is about 10870.6739901443. The cubic root of 118171553 is about 490.7243943379.

The spelling of 118171553 in words is "one hundred eighteen million, one hundred seventy-one thousand, five hundred fifty-three".