26553161 has 4 divisors (see below), whose sum is σ = 27270852. Its totient is φ = 25835472.

The previous prime is 26553157. The next prime is 26553169. The reversal of 26553161 is 16135562.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19891600 + 6661561 = 4460^2 + 2581^2 .

It is not a de Polignac number, because 26553161 - 2² = 26553157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26553169) 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, 358790 + ... + 358863.

It is an arithmetic number, because the mean of its divisors is an integer number (6817713).

Almost surely, 2^26553161 is an apocalyptic number.

It is an amenable number.

26553161 is a deficient number, since it is larger than the sum of its proper divisors (717691).

26553161 is an equidigital number, since it uses as much as digits as its factorization.

26553161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717690.

The product of its digits is 5400, while the sum is 29.

The square root of 26553161 is about 5152.9759362916. The cubic root of 26553161 is about 298.3358262296.

The spelling of 26553161 in words is "twenty-six million, five hundred fifty-three thousand, one hundred sixty-one".