26561455 has 8 divisors (see below), whose sum is σ = 32323104. Its totient is φ = 20949600.

The previous prime is 26561453. The next prime is 26561461. The reversal of 26561455 is 55416562.

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

It is not a de Polignac number, because 26561455 - 2¹ = 26561453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26561455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26561453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37056 + ... + 37765.

It is an arithmetic number, because the mean of its divisors is an integer number (4040388).

Almost surely, 2^26561455 is an apocalyptic number.

26561455 is a deficient number, since it is larger than the sum of its proper divisors (5761649).

26561455 is an equidigital number, since it uses as much as digits as its factorization.

26561455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74897.

The product of its digits is 36000, while the sum is 34.

The square root of 26561455 is about 5153.7806511337. The cubic root of 26561455 is about 298.3668851778.

The spelling of 26561455 in words is "twenty-six million, five hundred sixty-one thousand, four hundred fifty-five".