26803057 has 4 divisors (see below), whose sum is σ = 26814196. Its totient is φ = 26791920.

The previous prime is 26803009. The next prime is 26803079. The reversal of 26803057 is 75030862.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 75030862 = 2 ⋅37515431.

It can be written as a sum of positive squares in 2 ways, for example, as 24840256 + 1962801 = 4984^2 + 1401^2 .

It is a cyclic number.

It is not a de Polignac number, because 26803057 - 2⁷ = 26802929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26803157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294 + ... + 7327.

It is an arithmetic number, because the mean of its divisors is an integer number (6703549).

Almost surely, 2^26803057 is an apocalyptic number.

It is an amenable number.

26803057 is a deficient number, since it is larger than the sum of its proper divisors (11139).

26803057 is an equidigital number, since it uses as much as digits as its factorization.

26803057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11138.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 26803057 is about 5177.1668893324. The cubic root of 26803057 is about 299.2688007549.

The spelling of 26803057 in words is "twenty-six million, eight hundred three thousand, fifty-seven".