26431253 has 2 divisors, whose sum is σ = 26431254. Its totient is φ = 26431252.

The previous prime is 26431231. The next prime is 26431271. The reversal of 26431253 is 35213462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24423364 + 2007889 = 4942^2 + 1417^2 .

It is a cyclic number.

It is not a de Polignac number, because 26431253 - 2²⁰ = 25382677 is a prime.

It is a super-2 number, since 2×26431253² = 1397222270300018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26431453) 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 as a sum of consecutive naturals, namely, 13215626 + 13215627.

It is an arithmetic number, because the mean of its divisors is an integer number (13215627).

Almost surely, 2^26431253 is an apocalyptic number.

It is an amenable number.

26431253 is a deficient number, since it is larger than the sum of its proper divisors (1).

26431253 is an equidigital number, since it uses as much as digits as its factorization.

26431253 is an odious number, because the sum of its binary digits is odd.

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

The square root of 26431253 is about 5141.1334353428. The cubic root of 26431253 is about 297.8785633459.

The spelling of 26431253 in words is "twenty-six million, four hundred thirty-one thousand, two hundred fifty-three".