26097961 has 2 divisors, whose sum is σ = 26097962. Its totient is φ = 26097960.

The previous prime is 26097959. The next prime is 26097971. The reversal of 26097961 is 16979062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22857961 + 3240000 = 4781^2 + 1800^2 .

It is a cyclic number.

It is not a de Polignac number, because 26097961 - 2¹ = 26097959 is a prime.

It is a super-2 number, since 2×26097961² = 1362207136715042, which contains 22 as substring.

Together with 26097959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26097931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13048980 + 13048981.

It is an arithmetic number, because the mean of its divisors is an integer number (13048981).

Almost surely, 2^26097961 is an apocalyptic number.

It is an amenable number.

26097961 is a deficient number, since it is larger than the sum of its proper divisors (1).

26097961 is an equidigital number, since it uses as much as digits as its factorization.

26097961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 26097961 is about 5108.6163488757. The cubic root of 26097961 is about 296.6212034584.

The spelling of 26097961 in words is "twenty-six million, ninety-seven thousand, nine hundred sixty-one".