26170091 has 2 divisors, whose sum is σ = 26170092. Its totient is φ = 26170090.

The previous prime is 26170073. The next prime is 26170147. The reversal of 26170091 is 19007162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26170091 - 2¹⁴ = 26153707 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26170091.

It is not a weakly prime, because it can be changed into another prime (26170031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13085045 + 13085046.

It is an arithmetic number, because the mean of its divisors is an integer number (13085046).

Almost surely, 2^26170091 is an apocalyptic number.

26170091 is a deficient number, since it is larger than the sum of its proper divisors (1).

26170091 is an equidigital number, since it uses as much as digits as its factorization.

26170091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 26170091 is about 5115.6711192179. The cubic root of 26170091 is about 296.8942210418.

The spelling of 26170091 in words is "twenty-six million, one hundred seventy thousand, ninety-one".