26253581 has 2 divisors, whose sum is σ = 26253582. Its totient is φ = 26253580.

The previous prime is 26253551. The next prime is 26253587. The reversal of 26253581 is 18535262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19669225 + 6584356 = 4435^2 + 2566^2 .

It is a cyclic number.

It is not a de Polignac number, because 26253581 - 2¹⁸ = 25991437 is a prime.

It is a super-2 number, since 2×26253581² = 1378501030647122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26253587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13126790 + 13126791.

It is an arithmetic number, because the mean of its divisors is an integer number (13126791).

Almost surely, 2^26253581 is an apocalyptic number.

It is an amenable number.

26253581 is a deficient number, since it is larger than the sum of its proper divisors (1).

26253581 is an equidigital number, since it uses as much as digits as its factorization.

26253581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 32.

The square root of 26253581 is about 5123.8248408782. The cubic root of 26253581 is about 297.2096114265.

The spelling of 26253581 in words is "twenty-six million, two hundred fifty-three thousand, five hundred eighty-one".