11522172 has 48 divisors (see below), whose sum is σ = 28385280. Its totient is φ = 3630528.

The previous prime is 11522167. The next prime is 11522179. The reversal of 11522172 is 27122511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11522179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29893 + ... + 30275.

It is an arithmetic number, because the mean of its divisors is an integer number (591360).

Almost surely, 2^11522172 is an apocalyptic number.

11522172 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 11522172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14192640).

11522172 is an abundant number, since it is smaller than the sum of its proper divisors (16863108).

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

11522172 is a wasteful number, since it uses less digits than its factorization.

11522172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522 (or 520 counting only the distinct ones).

The product of its digits is 280, while the sum is 21.

The square root of 11522172 is about 3394.4325004336. The cubic root of 11522172 is about 225.8628399996.

Adding to 11522172 its reverse (27122511), we get a palindrome (38644683).

The spelling of 11522172 in words is "eleven million, five hundred twenty-two thousand, one hundred seventy-two".