12552381 has 16 divisors (see below), whose sum is σ = 18784320. Its totient is φ = 8283600.

The previous prime is 12552377. The next prime is 12552391. The reversal of 12552381 is 18325521.

It is a happy number.

It is not a de Polignac number, because 12552381 - 2² = 12552377 is a prime.

It is a super-3 number, since 3×12552381³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12552311) 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, 426 + ... + 5028.

It is an arithmetic number, because the mean of its divisors is an integer number (1174020).

Almost surely, 2^12552381 is an apocalyptic number.

It is an amenable number.

12552381 is a deficient number, since it is larger than the sum of its proper divisors (6231939).

12552381 is a wasteful number, since it uses less digits than its factorization.

12552381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4713 (or 4707 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 12552381 is about 3542.9339536604. The cubic root of 12552381 is about 232.4031646689.

The spelling of 12552381 in words is "twelve million, five hundred fifty-two thousand, three hundred eighty-one".