12355261 has 4 divisors (see below), whose sum is σ = 12382524. Its totient is φ = 12328000.

The previous prime is 12355253. The next prime is 12355271. The reversal of 12355261 is 16255321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3980025 + 8375236 = 1995^2 + 2894^2 .

It is a cyclic number.

It is not a de Polignac number, because 12355261 - 2³ = 12355253 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 (12355271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12940 + ... + 13861.

It is an arithmetic number, because the mean of its divisors is an integer number (3095631).

Almost surely, 2^12355261 is an apocalyptic number.

It is an amenable number.

12355261 is a deficient number, since it is larger than the sum of its proper divisors (27263).

12355261 is an equidigital number, since it uses as much as digits as its factorization.

12355261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27262.

The product of its digits is 1800, while the sum is 25.

The square root of 12355261 is about 3515.0051209067. The cubic root of 12355261 is about 231.1802033332.

The spelling of 12355261 in words is "twelve million, three hundred fifty-five thousand, two hundred sixty-one".