26561002 has 8 divisors (see below), whose sum is σ = 42906276. Its totient is φ = 12258912.

The previous prime is 26560997. The next prime is 26561009. The reversal of 26561002 is 20016562.

It can be written as a sum of positive squares in 2 ways, for example, as 20602521 + 5958481 = 4539^2 + 2441^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (26561009) 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 3 ways as a sum of consecutive naturals, for example, 510763 + ... + 510814.

Almost surely, 2^26561002 is an apocalyptic number.

26561002 is a deficient number, since it is larger than the sum of its proper divisors (16345274).

26561002 is a wasteful number, since it uses less digits than its factorization.

26561002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021592.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 26561002 is about 5153.7367026266. The cubic root of 26561002 is about 298.3651889734.

Adding to 26561002 its reverse (20016562), we get a palindrome (46577564).

The spelling of 26561002 in words is "twenty-six million, five hundred sixty-one thousand, two".