118727521 has 16 divisors (see below), whose sum is σ = 131803200. Its totient is φ = 106050880.

The previous prime is 118727509. The next prime is 118727563. The reversal of 118727521 is 125727811.

It is a cyclic number.

It is not a de Polignac number, because 118727521 - 2¹¹ = 118725473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118727591) 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 15 ways as a sum of consecutive naturals, for example, 175035 + ... + 175711.

It is an arithmetic number, because the mean of its divisors is an integer number (8237700).

Almost surely, 2^118727521 is an apocalyptic number.

118727521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

118727521 is a deficient number, since it is larger than the sum of its proper divisors (13075679).

118727521 is a wasteful number, since it uses less digits than its factorization.

118727521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944.

The product of its digits is 7840, while the sum is 34.

The square root of 118727521 is about 10896.2159027802. The cubic root of 118727521 is about 491.4927696551.

The spelling of 118727521 in words is "one hundred eighteen million, seven hundred twenty-seven thousand, five hundred twenty-one".