26140261 has 4 divisors (see below), whose sum is σ = 29874592. Its totient is φ = 22405932.

The previous prime is 26140253. The next prime is 26140297. The reversal of 26140261 is 16204162.

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 26140261 - 2³ = 26140253 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 (26140661) 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, 1867155 + ... + 1867168.

It is an arithmetic number, because the mean of its divisors is an integer number (7468648).

Almost surely, 2^26140261 is an apocalyptic number.

It is an amenable number.

26140261 is a deficient number, since it is larger than the sum of its proper divisors (3734331).

26140261 is an equidigital number, since it uses as much as digits as its factorization.

26140261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734330.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 26140261 is about 5112.7547369300. The cubic root of 26140261 is about 296.7813731127.

The spelling of 26140261 in words is "twenty-six million, one hundred forty thousand, two hundred sixty-one".