26278061 has 2 divisors, whose sum is σ = 26278062. Its totient is φ = 26278060.

The previous prime is 26278001. The next prime is 26278067. The reversal of 26278061 is 16087262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16760836 + 9517225 = 4094^2 + 3085^2 .

It is a cyclic number.

It is not a de Polignac number, because 26278061 - 2⁶ = 26277997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26278067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13139030 + 13139031.

It is an arithmetic number, because the mean of its divisors is an integer number (13139031).

Almost surely, 2^26278061 is an apocalyptic number.

It is an amenable number.

26278061 is a deficient number, since it is larger than the sum of its proper divisors (1).

26278061 is an equidigital number, since it uses as much as digits as its factorization.

26278061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 26278061 is about 5126.2131247150. The cubic root of 26278061 is about 297.3019598579.

The spelling of 26278061 in words is "twenty-six million, two hundred seventy-eight thousand, sixty-one".