12551115 has 32 divisors (see below), whose sum is σ = 21611520. Its totient is φ = 6200064.

The previous prime is 12551111. The next prime is 12551131. The reversal of 12551115 is 51115521.

It is not a de Polignac number, because 12551115 - 2² = 12551111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12551091 and 12551100.

It is not an unprimeable number, because it can be changed into a prime (12551111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12927 + ... + 13863.

It is an arithmetic number, because the mean of its divisors is an integer number (675360).

Almost surely, 2^12551115 is an apocalyptic number.

12551115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12551115 is a deficient number, since it is larger than the sum of its proper divisors (9060405).

12551115 is a wasteful number, since it uses less digits than its factorization.

12551115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011.

The product of its digits is 250, while the sum is 21.

The square root of 12551115 is about 3542.7552836740. The cubic root of 12551115 is about 232.3953512164.

Adding to 12551115 its reverse (51115521), we get a palindrome (63666636).

The spelling of 12551115 in words is "twelve million, five hundred fifty-one thousand, one hundred fifteen".