26543651 has 2 divisors, whose sum is σ = 26543652. Its totient is φ = 26543650.

The previous prime is 26543623. The next prime is 26543653. The reversal of 26543651 is 15634562.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26543651 is a prime.

It is a Sophie Germain prime.

Together with 26543653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26543653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13271825 + 13271826.

It is an arithmetic number, because the mean of its divisors is an integer number (13271826).

Almost surely, 2^26543651 is an apocalyptic number.

26543651 is a deficient number, since it is larger than the sum of its proper divisors (1).

26543651 is an equidigital number, since it uses as much as digits as its factorization.

26543651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 32.

The square root of 26543651 is about 5152.0530859066. The cubic root of 26543651 is about 298.3002057061.

The spelling of 26543651 in words is "twenty-six million, five hundred forty-three thousand, six hundred fifty-one".