115643251 has 8 divisors (see below), whose sum is σ = 117724608. Its totient is φ = 113568000.

The previous prime is 115643243. The next prime is 115643261. The reversal of 115643251 is 152346511.

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 115643251 - 2³ = 115643243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115643261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54531 + ... + 56611.

It is an arithmetic number, because the mean of its divisors is an integer number (14715576).

Almost surely, 2^115643251 is an apocalyptic number.

115643251 is a deficient number, since it is larger than the sum of its proper divisors (2081357).

115643251 is an equidigital number, since it uses as much as digits as its factorization.

115643251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053.

The product of its digits is 3600, while the sum is 28.

The square root of 115643251 is about 10753.7552045785. The cubic root of 115643251 is about 487.1994216355.

Adding to 115643251 its reverse (152346511), we get a palindrome (267989762).

The spelling of 115643251 in words is "one hundred fifteen million, six hundred forty-three thousand, two hundred fifty-one".