12551347 has 4 divisors (see below), whose sum is σ = 12577000. Its totient is φ = 12525696.

The previous prime is 12551339. The next prime is 12551351. The reversal of 12551347 is 74315521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12551347 - 2³ = 12551339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12551317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12078 + ... + 13075.

It is an arithmetic number, because the mean of its divisors is an integer number (3144250).

Almost surely, 2^12551347 is an apocalyptic number.

12551347 is a deficient number, since it is larger than the sum of its proper divisors (25653).

12551347 is an equidigital number, since it uses as much as digits as its factorization.

12551347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25652.

The product of its digits is 4200, while the sum is 28.

The square root of 12551347 is about 3542.7880263995. The cubic root of 12551347 is about 232.3967831048.

Adding to 12551347 its reverse (74315521), we get a palindrome (86866868).

The spelling of 12551347 in words is "twelve million, five hundred fifty-one thousand, three hundred forty-seven".