12172524 has 96 divisors (see below), whose sum is σ = 35675136. Its totient is φ = 3144960.

The previous prime is 12172513. The next prime is 12172549. The reversal of 12172524 is 42527121.

It is a junction number, because it is equal to n+sod(n) for n = 12172494 and 12172503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77454 + ... + 77610.

It is an arithmetic number, because the mean of its divisors is an integer number (371616).

Almost surely, 2^12172524 is an apocalyptic number.

12172524 is a gapful number since it is divisible by the number (14) 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 12172524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17837568).

12172524 is an abundant number, since it is smaller than the sum of its proper divisors (23502612).

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

12172524 is a wasteful number, since it uses less digits than its factorization.

12172524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 253 counting only the distinct ones).

The product of its digits is 1120, while the sum is 24.

The square root of 12172524 is about 3488.9144443508. The cubic root of 12172524 is about 230.0348025471.

Adding to 12172524 its reverse (42527121), we get a palindrome (54699645).

It can be divided in two parts, 1217 and 2524, that added together give a triangular number (3741 = T₈₆).

The spelling of 12172524 in words is "twelve million, one hundred seventy-two thousand, five hundred twenty-four".