26290457 has 2 divisors, whose sum is σ = 26290458. Its totient is φ = 26290456.

The previous prime is 26290447. The next prime is 26290469. The reversal of 26290457 is 75409262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18913801 + 7376656 = 4349^2 + 2716^2 .

It is a cyclic number.

It is not a de Polignac number, because 26290457 - 2¹⁰ = 26289433 is a prime.

It is not a weakly prime, because it can be changed into another prime (26290447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13145228 + 13145229.

It is an arithmetic number, because the mean of its divisors is an integer number (13145229).

Almost surely, 2^26290457 is an apocalyptic number.

It is an amenable number.

26290457 is a deficient number, since it is larger than the sum of its proper divisors (1).

26290457 is an equidigital number, since it uses as much as digits as its factorization.

26290457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 26290457 is about 5127.4220618162. The cubic root of 26290457 is about 297.3487006956.

The spelling of 26290457 in words is "twenty-six million, two hundred ninety thousand, four hundred fifty-seven".