12551532 has 24 divisors (see below), whose sum is σ = 33470976. Its totient is φ = 3586128.

The previous prime is 12551531. The next prime is 12551549. The reversal of 12551532 is 23515521.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12551531) 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, 74628 + ... + 74795.

It is an arithmetic number, because the mean of its divisors is an integer number (1394624).

Almost surely, 2^12551532 is an apocalyptic number.

12551532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12551532 is an abundant number, since it is smaller than the sum of its proper divisors (20919444).

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

12551532 is a wasteful number, since it uses less digits than its factorization.

12551532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149437 (or 149435 counting only the distinct ones).

The product of its digits is 1500, while the sum is 24.

The square root of 12551532 is about 3542.8141356837. The cubic root of 12551532 is about 232.3979248997.

The spelling of 12551532 in words is "twelve million, five hundred fifty-one thousand, five hundred thirty-two".