12551015 has 16 divisors (see below), whose sum is σ = 16070400. Its totient is φ = 9377280.

The previous prime is 12551009. The next prime is 12551017. The reversal of 12551015 is 51015521.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-12551015 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12551017) 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, 12170 + ... + 13160.

It is an arithmetic number, because the mean of its divisors is an integer number (1004400).

Almost surely, 2^12551015 is an apocalyptic number.

12551015 is a deficient number, since it is larger than the sum of its proper divisors (3519385).

12551015 is a wasteful number, since it uses less digits than its factorization.

12551015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 12551015 is about 3542.7411703369. The cubic root of 12551015 is about 232.3947340176.

Adding to 12551015 its reverse (51015521), we get a palindrome (63566536).

The spelling of 12551015 in words is "twelve million, five hundred fifty-one thousand, fifteen".