115721167 has 8 divisors (see below), whose sum is σ = 116678016. Its totient is φ = 114768672.

The previous prime is 115721141. The next prime is 115721183. The reversal of 115721167 is 761127511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115721167 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 (115721117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69873 + ... + 71509.

It is an arithmetic number, because the mean of its divisors is an integer number (14584752).

Almost surely, 2^115721167 is an apocalyptic number.

115721167 is a deficient number, since it is larger than the sum of its proper divisors (956849).

115721167 is a wasteful number, since it uses less digits than its factorization.

115721167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2177.

The product of its digits is 2940, while the sum is 31.

The square root of 115721167 is about 10757.3773290705. The cubic root of 115721167 is about 487.3088158501.

Adding to 115721167 its reverse (761127511), we get a palindrome (876848678).

The spelling of 115721167 in words is "one hundred fifteen million, seven hundred twenty-one thousand, one hundred sixty-seven".