12551138 has 8 divisors (see below), whose sum is σ = 18843600. Its totient is φ = 6269940.

The previous prime is 12551131. The next prime is 12551179. The reversal of 12551138 is 83115521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12551131) 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, 1013 + ... + 5111.

It is an arithmetic number, because the mean of its divisors is an integer number (2355450).

Almost surely, 2^12551138 is an apocalyptic number.

12551138 is a deficient number, since it is larger than the sum of its proper divisors (6292462).

12551138 is a wasteful number, since it uses less digits than its factorization.

12551138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5632.

The product of its digits is 1200, while the sum is 26.

The square root of 12551138 is about 3542.7585297336. The cubic root of 12551138 is about 232.3954931716.

Adding to 12551138 its reverse (83115521), we get a palindrome (95666659).

The spelling of 12551138 in words is "twelve million, five hundred fifty-one thousand, one hundred thirty-eight".