26075221 has 4 divisors (see below), whose sum is σ = 26711244. Its totient is φ = 25439200.

The previous prime is 26075209. The next prime is 26075251. The reversal of 26075221 is 12257062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12257062 = 2 ⋅6128531.

It can be written as a sum of positive squares in 2 ways, for example, as 12348196 + 13727025 = 3514^2 + 3705^2 .

It is a cyclic number.

It is not a de Polignac number, because 26075221 - 2¹³ = 26067029 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 (26075251) 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, 317950 + ... + 318031.

It is an arithmetic number, because the mean of its divisors is an integer number (6677811).

Almost surely, 2^26075221 is an apocalyptic number.

It is an amenable number.

26075221 is a deficient number, since it is larger than the sum of its proper divisors (636023).

26075221 is an equidigital number, since it uses as much as digits as its factorization.

26075221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636022.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 26075221 is about 5106.3902122732. The cubic root of 26075221 is about 296.5350265318.

The spelling of 26075221 in words is "twenty-six million, seventy-five thousand, two hundred twenty-one".