26495561 has 2 divisors, whose sum is σ = 26495562. Its totient is φ = 26495560.

The previous prime is 26495551. The next prime is 26495591. The reversal of 26495561 is 16559462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18966025 + 7529536 = 4355^2 + 2744^2 .

It is a cyclic number.

It is not a de Polignac number, because 26495561 - 2¹⁰ = 26494537 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 26495561 parts by 7279 straight cuts.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (26495551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13247780 + 13247781.

It is an arithmetic number, because the mean of its divisors is an integer number (13247781).

Almost surely, 2^26495561 is an apocalyptic number.

It is an amenable number.

26495561 is a deficient number, since it is larger than the sum of its proper divisors (1).

26495561 is an equidigital number, since it uses as much as digits as its factorization.

26495561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 38.

The square root of 26495561 is about 5147.3838986421. The cubic root of 26495561 is about 298.1199500600.

The spelling of 26495561 in words is "twenty-six million, four hundred ninety-five thousand, five hundred sixty-one".