26542889 has 2 divisors, whose sum is σ = 26542890. Its totient is φ = 26542888.

The previous prime is 26542849. The next prime is 26542903. The reversal of 26542889 is 98824562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17572864 + 8970025 = 4192^2 + 2995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26542889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26542849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13271444 + 13271445.

It is an arithmetic number, because the mean of its divisors is an integer number (13271445).

Almost surely, 2^26542889 is an apocalyptic number.

It is an amenable number.

26542889 is a deficient number, since it is larger than the sum of its proper divisors (1).

26542889 is an equidigital number, since it uses as much as digits as its factorization.

26542889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 44.

The square root of 26542889 is about 5151.9791342745. The cubic root of 26542889 is about 298.2973512013.

The spelling of 26542889 in words is "twenty-six million, five hundred forty-two thousand, eight hundred eighty-nine".