26111261 has 4 divisors (see below), whose sum is σ = 28485024. Its totient is φ = 23737500.

The previous prime is 26111257. The next prime is 26111287. The reversal of 26111261 is 16211162.

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.

It is a cyclic number.

It is not a de Polignac number, because 26111261 - 2² = 26111257 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 (26111231) 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, 1186865 + ... + 1186886.

It is an arithmetic number, because the mean of its divisors is an integer number (7121256).

Almost surely, 2^26111261 is an apocalyptic number.

It is an amenable number.

26111261 is a deficient number, since it is larger than the sum of its proper divisors (2373763).

26111261 is a wasteful number, since it uses less digits than its factorization.

26111261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373762.

The product of its digits is 144, while the sum is 20.

The square root of 26111261 is about 5109.9179054071. The cubic root of 26111261 is about 296.6715827714.

Subtracting from 26111261 its reverse (16211162), we obtain a palindrome (9900099).

The spelling of 26111261 in words is "twenty-six million, one hundred eleven thousand, two hundred sixty-one".