26516857 has 2 divisors, whose sum is σ = 26516858. Its totient is φ = 26516856.

The previous prime is 26516839. The next prime is 26516869. The reversal of 26516857 is 75861562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22005481 + 4511376 = 4691^2 + 2124^2 .

It is a cyclic number.

It is not a de Polignac number, because 26516857 - 2⁷ = 26516729 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26516807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13258428 + 13258429.

It is an arithmetic number, because the mean of its divisors is an integer number (13258429).

Almost surely, 2^26516857 is an apocalyptic number.

It is an amenable number.

26516857 is a deficient number, since it is larger than the sum of its proper divisors (1).

26516857 is an equidigital number, since it uses as much as digits as its factorization.

26516857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 40.

The square root of 26516857 is about 5149.4521067780. The cubic root of 26516857 is about 298.1998006969.

It can be divided in two parts, 265168 and 57, that added together give a square (265225 = 515²).

The spelling of 26516857 in words is "twenty-six million, five hundred sixteen thousand, eight hundred fifty-seven".