115354721 has 12 divisors (see below), whose sum is σ = 121434300. Its totient is φ = 109448640.

The previous prime is 115354717. The next prime is 115354727. The reversal of 115354721 is 127453511.

It can be written as a sum of positive squares in 6 ways, for example, as 37650496 + 77704225 = 6136^2 + 8815^2 .

It is not a de Polignac number, because 115354721 - 2² = 115354717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115354727) 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 11 ways as a sum of consecutive naturals, for example, 107375 + ... + 108443.

It is an arithmetic number, because the mean of its divisors is an integer number (10119525).

Almost surely, 2^115354721 is an apocalyptic number.

It is an amenable number.

115354721 is a deficient number, since it is larger than the sum of its proper divisors (6079579).

115354721 is an equidigital number, since it uses as much as digits as its factorization.

115354721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220 (or 1159 counting only the distinct ones).

The product of its digits is 4200, while the sum is 29.

The square root of 115354721 is about 10740.3315125745. The cubic root of 115354721 is about 486.7938965428.

The spelling of 115354721 in words is "one hundred fifteen million, three hundred fifty-four thousand, seven hundred twenty-one".