26491051 has 2 divisors, whose sum is σ = 26491052. Its totient is φ = 26491050.

The previous prime is 26491039. The next prime is 26491061. The reversal of 26491051 is 15019462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26491051 - 2¹⁹ = 25966763 is a prime.

It is equal to p_1653265 and since 26491051 and 1653265 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (26491061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13245525 + 13245526.

It is an arithmetic number, because the mean of its divisors is an integer number (13245526).

Almost surely, 2^26491051 is an apocalyptic number.

26491051 is a deficient number, since it is larger than the sum of its proper divisors (1).

26491051 is an equidigital number, since it uses as much as digits as its factorization.

26491051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 26491051 is about 5146.9457933808. The cubic root of 26491051 is about 298.1030340532.

The spelling of 26491051 in words is "twenty-six million, four hundred ninety-one thousand, fifty-one".