26854561 has 2 divisors, whose sum is σ = 26854562. Its totient is φ = 26854560.

The previous prime is 26854511. The next prime is 26854571. The reversal of 26854561 is 16545862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26010000 + 844561 = 5100^2 + 919^2 .

It is a cyclic number.

It is not a de Polignac number, because 26854561 - 2⁷ = 26854433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26854561.

It is not a weakly prime, because it can be changed into another prime (26854511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13427280 + 13427281.

It is an arithmetic number, because the mean of its divisors is an integer number (13427281).

Almost surely, 2^26854561 is an apocalyptic number.

It is an amenable number.

26854561 is a deficient number, since it is larger than the sum of its proper divisors (1).

26854561 is an equidigital number, since it uses as much as digits as its factorization.

26854561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 37.

The square root of 26854561 is about 5182.1386511748. The cubic root of 26854561 is about 299.4603669396.

The spelling of 26854561 in words is "twenty-six million, eight hundred fifty-four thousand, five hundred sixty-one".