26311001 has 2 divisors, whose sum is σ = 26311002. Its totient is φ = 26311000.

The previous prime is 26310997. The next prime is 26311007. The reversal of 26311001 is 10011362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21576025 + 4734976 = 4645^2 + 2176^2 .

It is a cyclic number.

It is not a de Polignac number, because 26311001 - 2² = 26310997 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26311007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13155500 + 13155501.

It is an arithmetic number, because the mean of its divisors is an integer number (13155501).

Almost surely, 2^26311001 is an apocalyptic number.

It is an amenable number.

26311001 is a deficient number, since it is larger than the sum of its proper divisors (1).

26311001 is an equidigital number, since it uses as much as digits as its factorization.

26311001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 26311001 is about 5129.4250165101. The cubic root of 26311001 is about 297.4261323562.

Adding to 26311001 its reverse (10011362), we get a palindrome (36322363).

The spelling of 26311001 in words is "twenty-six million, three hundred eleven thousand, one".