26253431 has 2 divisors, whose sum is σ = 26253432. Its totient is φ = 26253430.

The previous prime is 26253427. The next prime is 26253443. The reversal of 26253431 is 13435262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26253431 - 2² = 26253427 is a prime.

It is a super-2 number, since 2×26253431² = 1378485278543522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26253431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26252431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13126715 + 13126716.

It is an arithmetic number, because the mean of its divisors is an integer number (13126716).

Almost surely, 2^26253431 is an apocalyptic number.

26253431 is a deficient number, since it is larger than the sum of its proper divisors (1).

26253431 is an equidigital number, since it uses as much as digits as its factorization.

26253431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 26.

The square root of 26253431 is about 5123.8102033545. The cubic root of 26253431 is about 297.2090453891.

Adding to 26253431 its reverse (13435262), we get a palindrome (39688693).

The spelling of 26253431 in words is "twenty-six million, two hundred fifty-three thousand, four hundred thirty-one".