115111441 has 3 divisors (see below), whose sum is σ = 115122171. Its totient is φ = 115100712.

The previous prime is 115111439. The next prime is 115111483. The reversal of 115111441 is 144111511.

The square root of 115111441 is 10729.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 144111511 = 8597 ⋅16763.

It can be written as a sum of positive squares in only one way, i.e., 85951441 + 29160000 = 9271^2 + 5400^2 .

It is not a de Polignac number, because 115111441 - 2¹ = 115111439 is a prime.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115111541) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5365 + ... + 16093.

It is an arithmetic number, because the mean of its divisors is an integer number (38374057).

Almost surely, 2^115111441 is an apocalyptic number.

115111441 is the 10729-th square number.

115111441 is the 5365-th centered octagonal number.

It is an amenable number.

115111441 is a deficient number, since it is larger than the sum of its proper divisors (10730).

115111441 is an frugal number, since it uses more digits than its factorization.

115111441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21458 (or 10729 counting only the distinct ones).

The product of its digits is 80, while the sum is 19.

The cubic root of 115111441 is about 486.4514439494.

Adding to 115111441 its reverse (144111511), we get a palindrome (259222952).

It can be divided in two parts, 115 and 111441, that added together give a square (111556 = 334²).

The spelling of 115111441 in words is "one hundred fifteen million, one hundred eleven thousand, four hundred forty-one".