12451572 has 36 divisors (see below), whose sum is σ = 35971936. Its totient is φ = 3557520.

The previous prime is 12451561. The next prime is 12451589. The reversal of 12451572 is 27515421.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24454 + ... + 24957.

Almost surely, 2^12451572 is an apocalyptic number.

12451572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12451572 is an abundant number, since it is smaller than the sum of its proper divisors (23520364).

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

12451572 is a wasteful number, since it uses less digits than its factorization.

12451572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49428 (or 49423 counting only the distinct ones).

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

The square root of 12451572 is about 3528.6785061833. The cubic root of 12451572 is about 231.7793433099.

Adding to 12451572 its reverse (27515421), we get a palindrome (39966993).

It can be divided in two parts, 12 and 451572, that added together give a square (451584 = 672²).

The spelling of 12451572 in words is "twelve million, four hundred fifty-one thousand, five hundred seventy-two".