26038561 has 2 divisors, whose sum is σ = 26038562. Its totient is φ = 26038560.

The previous prime is 26038559. The next prime is 26038603. The reversal of 26038561 is 16583062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26010000 + 28561 = 5100^2 + 169^2 .

It is a cyclic number.

It is not a de Polignac number, because 26038561 - 2¹ = 26038559 is a prime.

Together with 26038559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26038261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13019280 + 13019281.

It is an arithmetic number, because the mean of its divisors is an integer number (13019281).

Almost surely, 2^26038561 is an apocalyptic number.

It is an amenable number.

26038561 is a deficient number, since it is larger than the sum of its proper divisors (1).

26038561 is an equidigital number, since it uses as much as digits as its factorization.

26038561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 26038561 is about 5102.7993297797. The cubic root of 26038561 is about 296.3959919458.

The spelling of 26038561 in words is "twenty-six million, thirty-eight thousand, five hundred sixty-one".