26855553 has 4 divisors (see below), whose sum is σ = 35807408. Its totient is φ = 17903700.

The previous prime is 26855519. The next prime is 26855557. The reversal of 26855553 is 35555862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 26855553 - 2⁶ = 26855489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26855557) 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, 4475923 + ... + 4475928.

It is an arithmetic number, because the mean of its divisors is an integer number (8951852).

Almost surely, 2^26855553 is an apocalyptic number.

It is an amenable number.

26855553 is a deficient number, since it is larger than the sum of its proper divisors (8951855).

26855553 is an equidigital number, since it uses as much as digits as its factorization.

26855553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8951854.

The product of its digits is 180000, while the sum is 39.

The square root of 26855553 is about 5182.2343636698. The cubic root of 26855553 is about 299.4640542217.

The spelling of 26855553 in words is "twenty-six million, eight hundred fifty-five thousand, five hundred fifty-three".