26273281 has 2 divisors, whose sum is σ = 26273282. Its totient is φ = 26273280.

The previous prime is 26273263. The next prime is 26273287. The reversal of 26273281 is 18237262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25160256 + 1113025 = 5016^2 + 1055^2 .

It is a cyclic number.

It is not a de Polignac number, because 26273281 - 2¹⁹ = 25748993 is a prime.

It is a super-2 number, since 2×26273281² = 1380570589009922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26273287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13136640 + 13136641.

It is an arithmetic number, because the mean of its divisors is an integer number (13136641).

Almost surely, 2^26273281 is an apocalyptic number.

It is an amenable number.

26273281 is a deficient number, since it is larger than the sum of its proper divisors (1).

26273281 is an equidigital number, since it uses as much as digits as its factorization.

26273281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 31.

The square root of 26273281 is about 5125.7468724080. The cubic root of 26273281 is about 297.2839322778.

The spelling of 26273281 in words is "twenty-six million, two hundred seventy-three thousand, two hundred eighty-one".