26015993 has 2 divisors, whose sum is σ = 26015994. Its totient is φ = 26015992.

The previous prime is 26015981. The next prime is 26016007. The reversal of 26015993 is 39951062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19998784 + 6017209 = 4472^2 + 2453^2 .

It is a cyclic number.

It is not a de Polignac number, because 26015993 - 2¹² = 26011897 is a prime.

It is not a weakly prime, because it can be changed into another prime (26015923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13007996 + 13007997.

It is an arithmetic number, because the mean of its divisors is an integer number (13007997).

Almost surely, 2^26015993 is an apocalyptic number.

It is an amenable number.

26015993 is a deficient number, since it is larger than the sum of its proper divisors (1).

26015993 is an equidigital number, since it uses as much as digits as its factorization.

26015993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 26015993 is about 5100.5875151790. The cubic root of 26015993 is about 296.3103369540.

The spelling of 26015993 in words is "twenty-six million, fifteen thousand, nine hundred ninety-three".