13612261 has 4 divisors (see below), whose sum is σ = 14659372. Its totient is φ = 12565152.

The previous prime is 13612231. The next prime is 13612271. The reversal of 13612261 is 16221631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16221631 = 1997 ⋅8123.

It can be written as a sum of positive squares in 2 ways, for example, as 1404225 + 12208036 = 1185^2 + 3494^2 .

It is a cyclic number.

It is not a de Polignac number, because 13612261 - 2⁵ = 13612229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13612201) 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, 523536 + ... + 523561.

It is an arithmetic number, because the mean of its divisors is an integer number (3664843).

Almost surely, 2^13612261 is an apocalyptic number.

It is an amenable number.

13612261 is a deficient number, since it is larger than the sum of its proper divisors (1047111).

13612261 is a wasteful number, since it uses less digits than its factorization.

13612261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047110.

The product of its digits is 432, while the sum is 22.

The square root of 13612261 is about 3689.4797736266. The cubic root of 13612261 is about 238.7683486899.

Adding to 13612261 its reverse (16221631), we get a palindrome (29833892).

The spelling of 13612261 in words is "thirteen million, six hundred twelve thousand, two hundred sixty-one".