12653261 has 4 divisors (see below), whose sum is σ = 12700224. Its totient is φ = 12606300.

The previous prime is 12653257. The next prime is 12653281. The reversal of 12653261 is 16235621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16235621 = 29 ⋅559849.

It is a cyclic number.

It is not a de Polignac number, because 12653261 - 2² = 12653257 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 12653261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12653281) 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, 23075 + ... + 23616.

It is an arithmetic number, because the mean of its divisors is an integer number (3175056).

Almost surely, 2^12653261 is an apocalyptic number.

It is an amenable number.

12653261 is a deficient number, since it is larger than the sum of its proper divisors (46963).

12653261 is an equidigital number, since it uses as much as digits as its factorization.

12653261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46962.

The product of its digits is 2160, while the sum is 26.

The square root of 12653261 is about 3557.1422518645. The cubic root of 12653261 is about 233.0240907876.

Adding to 12653261 its reverse (16235621), we get a palindrome (28888882).

The spelling of 12653261 in words is "twelve million, six hundred fifty-three thousand, two hundred sixty-one".