26290057 has 2 divisors, whose sum is σ = 26290058. Its totient is φ = 26290056.

The previous prime is 26290049. The next prime is 26290087. The reversal of 26290057 is 75009262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19193161 + 7096896 = 4381^2 + 2664^2 .

It is a cyclic number.

It is not a de Polignac number, because 26290057 - 2³ = 26290049 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26290087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13145028 + 13145029.

It is an arithmetic number, because the mean of its divisors is an integer number (13145029).

Almost surely, 2^26290057 is an apocalyptic number.

It is an amenable number.

26290057 is a deficient number, since it is larger than the sum of its proper divisors (1).

26290057 is an equidigital number, since it uses as much as digits as its factorization.

26290057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 26290057 is about 5127.3830557118. The cubic root of 26290057 is about 297.3471926695.

The spelling of 26290057 in words is "twenty-six million, two hundred ninety thousand, fifty-seven".