26561479 has 6 divisors (see below), whose sum is σ = 30898104. Its totient is φ = 22766940.

The previous prime is 26561473. The next prime is 26561501. The reversal of 26561479 is 97416562.

It is not a de Polignac number, because 26561479 - 2³ = 26561471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26561471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 270987 + ... + 271084.

It is an arithmetic number, because the mean of its divisors is an integer number (5149684).

Almost surely, 2^26561479 is an apocalyptic number.

26561479 is a deficient number, since it is larger than the sum of its proper divisors (4336625).

26561479 is an equidigital number, since it uses as much as digits as its factorization.

26561479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542085 (or 542078 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 26561479 is about 5153.7829795210. The cubic root of 26561479 is about 298.3669750424.

The spelling of 26561479 in words is "twenty-six million, five hundred sixty-one thousand, four hundred seventy-nine".