26451231 has 4 divisors (see below), whose sum is σ = 35268312. Its totient is φ = 17634152.

The previous prime is 26451223. The next prime is 26451233. The reversal of 26451231 is 13215462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26451231 - 2³ = 26451223 is a prime.

It is a super-2 number, since 2×26451231² = 1399335242830722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26451233) 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, 4408536 + ... + 4408541.

It is an arithmetic number, because the mean of its divisors is an integer number (8817078).

Almost surely, 2^26451231 is an apocalyptic number.

26451231 is a deficient number, since it is larger than the sum of its proper divisors (8817081).

26451231 is an equidigital number, since it uses as much as digits as its factorization.

26451231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8817080.

The product of its digits is 1440, while the sum is 24.

The square root of 26451231 is about 5143.0760251040. The cubic root of 26451231 is about 297.9535947139.

Adding to 26451231 its reverse (13215462), we get a palindrome (39666693).

The spelling of 26451231 in words is "twenty-six million, four hundred fifty-one thousand, two hundred thirty-one".