26855257 has 16 divisors (see below), whose sum is σ = 33409152. Its totient is φ = 21208320.

The previous prime is 26855251. The next prime is 26855261. The reversal of 26855257 is 75255862.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26855257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26855251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3093 + ... + 7954.

It is an arithmetic number, because the mean of its divisors is an integer number (2088072).

Almost surely, 2^26855257 is an apocalyptic number.

It is an amenable number.

26855257 is a deficient number, since it is larger than the sum of its proper divisors (6553895).

26855257 is a wasteful number, since it uses less digits than its factorization.

26855257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11088.

The product of its digits is 168000, while the sum is 40.

The square root of 26855257 is about 5182.2058044813. The cubic root of 26855257 is about 299.4629539938.

The spelling of 26855257 in words is "twenty-six million, eight hundred fifty-five thousand, two hundred fifty-seven".