26273221 has 4 divisors (see below), whose sum is σ = 28294252. Its totient is φ = 24252192.

The previous prime is 26273209. The next prime is 26273227. The reversal of 26273221 is 12237262.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12237262 = 2 ⋅6118631.

It can be written as a sum of positive squares in 2 ways, for example, as 11296321 + 14976900 = 3361^2 + 3870^2 .

It is a cyclic number.

It is not a de Polignac number, because 26273221 - 2⁵ = 26273189 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 (26273227) 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, 1010496 + ... + 1010521.

It is an arithmetic number, because the mean of its divisors is an integer number (7073563).

Almost surely, 2^26273221 is an apocalyptic number.

It is an amenable number.

26273221 is a deficient number, since it is larger than the sum of its proper divisors (2021031).

26273221 is a wasteful number, since it uses less digits than its factorization.

26273221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021030.

The product of its digits is 2016, while the sum is 25.

The square root of 26273221 is about 5125.7410195990. The cubic root of 26273221 is about 297.2837059763.

The spelling of 26273221 in words is "twenty-six million, two hundred seventy-three thousand, two hundred twenty-one".