26157563 has 4 divisors (see below), whose sum is σ = 26198640. Its totient is φ = 26116488.

The previous prime is 26157553. The next prime is 26157569. The reversal of 26157563 is 36575162.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26157563 - 2¹² = 26153467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26157569) 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, 19568 + ... + 20861.

It is an arithmetic number, because the mean of its divisors is an integer number (6549660).

Almost surely, 2^26157563 is an apocalyptic number.

26157563 is a deficient number, since it is larger than the sum of its proper divisors (41077).

26157563 is an equidigital number, since it uses as much as digits as its factorization.

26157563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41076.

The product of its digits is 37800, while the sum is 35.

The square root of 26157563 is about 5114.4464998668. The cubic root of 26157563 is about 296.8468376314.

The spelling of 26157563 in words is "twenty-six million, one hundred fifty-seven thousand, five hundred sixty-three".