12261255 has 16 divisors (see below), whose sum is σ = 20097504. Its totient is φ = 6379520.

The previous prime is 12261253. The next prime is 12261257. The reversal of 12261255 is 55216221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12261253) and next prime (12261257).

It is not a de Polignac number, because 12261255 - 2¹ = 12261253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12261253) 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, 9354 + ... + 10583.

It is an arithmetic number, because the mean of its divisors is an integer number (1256094).

Almost surely, 2^12261255 is an apocalyptic number.

12261255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12261255 is a deficient number, since it is larger than the sum of its proper divisors (7836249).

12261255 is a wasteful number, since it uses less digits than its factorization.

12261255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19986.

The product of its digits is 1200, while the sum is 24.

The square root of 12261255 is about 3501.6074879975. The cubic root of 12261255 is about 230.5923922583.

Adding to 12261255 its reverse (55216221), we get a palindrome (67477476).

The spelling of 12261255 in words is "twelve million, two hundred sixty-one thousand, two hundred fifty-five".