118801551 has 12 divisors (see below), whose sum is σ = 174111896. Its totient is φ = 72000720.

The previous prime is 118801549. The next prime is 118801583. The reversal of 118801551 is 155108811.

It is not a de Polignac number, because 118801551 - 2¹ = 118801549 is a prime.

It is a super-2 number, since 2×118801551² = 28227617040011202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118801541) 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 11 ways as a sum of consecutive naturals, for example, 163276 + ... + 164001.

Almost surely, 2^118801551 is an apocalyptic number.

118801551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

118801551 is a deficient number, since it is larger than the sum of its proper divisors (55310345).

118801551 is a wasteful number, since it uses less digits than its factorization.

118801551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327302 (or 327291 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 30.

The square root of 118801551 is about 10899.6124243021. The cubic root of 118801551 is about 491.5949016900.

It can be divided in two parts, 11880 and 1551, that added together give a palindrome (13431).

The spelling of 118801551 in words is "one hundred eighteen million, eight hundred one thousand, five hundred fifty-one".