13251155 has 4 divisors (see below), whose sum is σ = 15901392. Its totient is φ = 10600920.

The previous prime is 13251137. The next prime is 13251157. The reversal of 13251155 is 55115231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55115231 = 313 ⋅176087.

It is not a de Polignac number, because 13251155 - 2⁸ = 13250899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13251155.

It is not an unprimeable number, because it can be changed into a prime (13251157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1325111 + ... + 1325120.

It is an arithmetic number, because the mean of its divisors is an integer number (3975348).

Almost surely, 2^13251155 is an apocalyptic number.

13251155 is a deficient number, since it is larger than the sum of its proper divisors (2650237).

13251155 is an equidigital number, since it uses as much as digits as its factorization.

13251155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2650236.

The product of its digits is 750, while the sum is 23.

The square root of 13251155 is about 3640.2135926344. The cubic root of 13251155 is about 236.6380500567.

Adding to 13251155 its reverse (55115231), we get a palindrome (68366386).

It can be divided in two parts, 1325 and 1155, that multiplied together give a triangular number (1530375 = T₁₇₄₉).

The spelling of 13251155 in words is "thirteen million, two hundred fifty-one thousand, one hundred fifty-five".