12651155 has 16 divisors (see below), whose sum is σ = 16707168. Its totient is φ = 9196000.

The previous prime is 12651103. The next prime is 12651161. The reversal of 12651155 is 55115621.

It is not a de Polignac number, because 12651155 - 2⁶ = 12651091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5705 + ... + 7605.

It is an arithmetic number, because the mean of its divisors is an integer number (1044198).

Almost surely, 2^12651155 is an apocalyptic number.

12651155 is a deficient number, since it is larger than the sum of its proper divisors (4056013).

12651155 is an equidigital number, since it uses as much as digits as its factorization.

12651155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939 (or 1917 counting only the distinct ones).

The product of its digits is 1500, while the sum is 26.

The square root of 12651155 is about 3556.8462153993. The cubic root of 12651155 is about 233.0111619475.

Adding to 12651155 its reverse (55115621), we get a palindrome (67766776).

The spelling of 12651155 in words is "twelve million, six hundred fifty-one thousand, one hundred fifty-five".