26543971 has 2 divisors, whose sum is σ = 26543972. Its totient is φ = 26543970.

The previous prime is 26543941. The next prime is 26543999. The reversal of 26543971 is 17934562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26543971 - 2⁵ = 26543939 is a prime.

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 26543971.

It is not a weakly prime, because it can be changed into another prime (26543941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13271985 + 13271986.

It is an arithmetic number, because the mean of its divisors is an integer number (13271986).

Almost surely, 2^26543971 is an apocalyptic number.

26543971 is a deficient number, since it is larger than the sum of its proper divisors (1).

26543971 is an equidigital number, since it uses as much as digits as its factorization.

26543971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 26543971 is about 5152.0841413937. The cubic root of 26543971 is about 298.3014044319.

The spelling of 26543971 in words is "twenty-six million, five hundred forty-three thousand, nine hundred seventy-one".