12511151 has 16 divisors (see below), whose sum is σ = 13516800. Its totient is φ = 11557728.

The previous prime is 12511141. The next prime is 12511159. The reversal of 12511151 is 15111521.

It is a cyclic number.

It is not a de Polignac number, because 12511151 - 2⁶ = 12511087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12511159) 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, 98450 + ... + 98576.

It is an arithmetic number, because the mean of its divisors is an integer number (844800).

Almost surely, 2^12511151 is an apocalyptic number.

12511151 is a deficient number, since it is larger than the sum of its proper divisors (1005649).

12511151 is a wasteful number, since it uses less digits than its factorization.

12511151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278.

The product of its digits is 50, while the sum is 17.

The square root of 12511151 is about 3537.1105439327. The cubic root of 12511151 is about 232.1484323124.

Adding to 12511151 its reverse (15111521), we get a palindrome (27622672).

It can be divided in two parts, 1 and 2511151, that added together give a palindrome (2511152).

The spelling of 12511151 in words is "twelve million, five hundred eleven thousand, one hundred fifty-one".