115541172 has 72 divisors (see below), whose sum is σ = 302221920. Its totient is φ = 37195200.

The previous prime is 115541161. The next prime is 115541183. The reversal of 115541172 is 271145511.

115541172 is a `hidden beast` number, since 115 + 541 + 1 + 7 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (115541161) and next prime (115541183).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155979 + ... + 156717.

Almost surely, 2^115541172 is an apocalyptic number.

115541172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115541172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151110960).

115541172 is an abundant number, since it is smaller than the sum of its proper divisors (186680748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115541172 is a wasteful number, since it uses less digits than its factorization.

115541172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893 (or 888 counting only the distinct ones).

The product of its digits is 1400, while the sum is 27.

The square root of 115541172 is about 10749.0079542254. The cubic root of 115541172 is about 487.0560281396.

Adding to 115541172 its reverse (271145511), we get a palindrome (386686683).

The spelling of 115541172 in words is "one hundred fifteen million, five hundred forty-one thousand, one hundred seventy-two".