12545172 has 24 divisors (see below), whose sum is σ = 32524800. Its totient is φ = 4181688.

The previous prime is 12545171. The next prime is 12545177. The reversal of 12545172 is 27154521.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12545171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57972 + ... + 58187.

It is an arithmetic number, because the mean of its divisors is an integer number (1355200).

Almost surely, 2^12545172 is an apocalyptic number.

12545172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12545172 is an abundant number, since it is smaller than the sum of its proper divisors (19979628).

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

12545172 is a wasteful number, since it uses less digits than its factorization.

12545172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116172 (or 116164 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 12545172 is about 3541.9164304088. The cubic root of 12545172 is about 232.3586654021.

Adding to 12545172 its reverse (27154521), we get a palindrome (39699693).

The spelling of 12545172 in words is "twelve million, five hundred forty-five thousand, one hundred seventy-two".