172244115 has 12 divisors (see below), whose sum is σ = 298556544. Its totient is φ = 91863504.

The previous prime is 172244113. The next prime is 172244129. The reversal of 172244115 is 511442271.

It is not a de Polignac number, because 172244115 - 2¹ = 172244113 is a prime.

It is a super-3 number, since 3×172244115³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (172244113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1913779 + ... + 1913868.

It is an arithmetic number, because the mean of its divisors is an integer number (24879712).

Almost surely, 2^172244115 is an apocalyptic number.

172244115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

172244115 is a deficient number, since it is larger than the sum of its proper divisors (126312429).

172244115 is a wasteful number, since it uses less digits than its factorization.

172244115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3827658 (or 3827655 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 172244115 is about 13124.1805458474. The cubic root of 172244115 is about 556.3927523195.

Adding to 172244115 its reverse (511442271), we get a palindrome (683686386).

The spelling of 172244115 in words is "one hundred seventy-two million, two hundred forty-four thousand, one hundred fifteen".