115671821 has 8 divisors (see below), whose sum is σ = 117769344. Its totient is φ = 113592960.

The previous prime is 115671817. The next prime is 115671823. The reversal of 115671821 is 128176511.

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 115671821 - 2² = 115671817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115671823) 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, 8156 + ... + 17258.

It is an arithmetic number, because the mean of its divisors is an integer number (14721168).

Almost surely, 2^115671821 is an apocalyptic number.

It is an amenable number.

115671821 is a deficient number, since it is larger than the sum of its proper divisors (2097523).

115671821 is an equidigital number, since it uses as much as digits as its factorization.

115671821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9331.

The product of its digits is 3360, while the sum is 32.

The square root of 115671821 is about 10755.0834957242. The cubic root of 115671821 is about 487.2395396745.

The spelling of 115671821 in words is "one hundred fifteen million, six hundred seventy-one thousand, eight hundred twenty-one".