26543231 has 16 divisors (see below), whose sum is σ = 31328640. Its totient is φ = 22170720.

The previous prime is 26543191. The next prime is 26543249. The reversal of 26543231 is 13234562.

It is not a de Polignac number, because 26543231 - 2²² = 22348927 is a prime.

It is a super-2 number, since 2×26543231² = 1409086223838722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26543231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26545231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59696 + ... + 60138.

It is an arithmetic number, because the mean of its divisors is an integer number (1958040).

Almost surely, 2^26543231 is an apocalyptic number.

26543231 is a deficient number, since it is larger than the sum of its proper divisors (4785409).

26543231 is a wasteful number, since it uses less digits than its factorization.

26543231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886.

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

The square root of 26543231 is about 5152.0123252958. The cubic root of 26543231 is about 298.2986323638.

Adding to 26543231 its reverse (13234562), we get a palindrome (39777793).

It can be divided in two parts, 2654 and 3231, that added together give a palindrome (5885).

The spelling of 26543231 in words is "twenty-six million, five hundred forty-three thousand, two hundred thirty-one".