26490001 has 2 divisors, whose sum is σ = 26490002. Its totient is φ = 26490000.

The previous prime is 26489993. The next prime is 26490007. The reversal of 26490001 is 10009462.

26490001 is nontrivially palindromic in base 16.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23030401 + 3459600 = 4799^2 + 1860^2 .

It is a cyclic number.

It is not a de Polignac number, because 26490001 - 2³ = 26489993 is a prime.

It is not a weakly prime, because it can be changed into another prime (26490007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13245000 + 13245001.

It is an arithmetic number, because the mean of its divisors is an integer number (13245001).

Almost surely, 2^26490001 is an apocalyptic number.

It is an amenable number.

26490001 is a deficient number, since it is larger than the sum of its proper divisors (1).

26490001 is an equidigital number, since it uses as much as digits as its factorization.

26490001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 26490001 is about 5146.8437901300. The cubic root of 26490001 is about 298.0990954613.

Adding to 26490001 its reverse (10009462), we get a palindrome (36499463).

The spelling of 26490001 in words is "twenty-six million, four hundred ninety thousand, one".