26001563 has 8 divisors (see below), whose sum is σ = 29752800. Its totient is φ = 22259520.

The previous prime is 26001559. The next prime is 26001581. The reversal of 26001563 is 36510062.

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

It is a cyclic number.

It is not a de Polignac number, because 26001563 - 2² = 26001559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26001533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5573 + ... + 9113.

It is an arithmetic number, because the mean of its divisors is an integer number (3719100).

Almost surely, 2^26001563 is an apocalyptic number.

26001563 is a deficient number, since it is larger than the sum of its proper divisors (3751237).

26001563 is a wasteful number, since it uses less digits than its factorization.

26001563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4597.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 26001563 is about 5099.1727760491. The cubic root of 26001563 is about 296.2555431081.

The spelling of 26001563 in words is "twenty-six million, one thousand, five hundred sixty-three".