26496561 has 32 divisors (see below), whose sum is σ = 44126208. Its totient is φ = 13769280.

The previous prime is 26496553. The next prime is 26496563. The reversal of 26496561 is 16569462.

It is not a de Polignac number, because 26496561 - 2³ = 26496553 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (26496563) 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 31 ways as a sum of consecutive naturals, for example, 18700 + ... + 20066.

It is an arithmetic number, because the mean of its divisors is an integer number (1378944).

Almost surely, 2^26496561 is an apocalyptic number.

26496561 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

26496561 is a deficient number, since it is larger than the sum of its proper divisors (17629647).

26496561 is a wasteful number, since it uses less digits than its factorization.

26496561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461.

The product of its digits is 77760, while the sum is 39.

The square root of 26496561 is about 5147.4810344478. The cubic root of 26496561 is about 298.1237005776.

The spelling of 26496561 in words is "twenty-six million, four hundred ninety-six thousand, five hundred sixty-one".