26552565 has 24 divisors (see below), whose sum is σ = 49565880. Its totient is φ = 13071744.

The previous prime is 26552563. The next prime is 26552573. The reversal of 26552565 is 56525562.

It can be written as a sum of positive squares in 4 ways, for example, as 1542564 + 25010001 = 1242^2 + 5001^2 .

It is not a de Polignac number, because 26552565 - 2¹ = 26552563 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26552563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22110 + ... + 23279.

It is an arithmetic number, because the mean of its divisors is an integer number (2065245).

Almost surely, 2^26552565 is an apocalyptic number.

It is an amenable number.

26552565 is a deficient number, since it is larger than the sum of its proper divisors (23013315).

26552565 is a wasteful number, since it uses less digits than its factorization.

26552565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45413 (or 45410 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 26552565 is about 5152.9181053069. The cubic root of 26552565 is about 298.3335941101. Note that the first 3 decimals are identical.

The spelling of 26552565 in words is "twenty-six million, five hundred fifty-two thousand, five hundred sixty-five".