26145391 has 2 divisors, whose sum is σ = 26145392. Its totient is φ = 26145390.

The previous prime is 26145389. The next prime is 26145397. The reversal of 26145391 is 19354162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26145391 - 2¹ = 26145389 is a prime.

Together with 26145389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26145397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13072695 + 13072696.

It is an arithmetic number, because the mean of its divisors is an integer number (13072696).

Almost surely, 2^26145391 is an apocalyptic number.

26145391 is a deficient number, since it is larger than the sum of its proper divisors (1).

26145391 is an equidigital number, since it uses as much as digits as its factorization.

26145391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 31.

The square root of 26145391 is about 5113.2563988128. The cubic root of 26145391 is about 296.8007861917.

The spelling of 26145391 in words is "twenty-six million, one hundred forty-five thousand, three hundred ninety-one".