55205266 has 4 divisors (see below), whose sum is σ = 82807902. Its totient is φ = 27602632.

The previous prime is 55205261. The next prime is 55205281. The reversal of 55205266 is 66250255.

55205266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 51538041 + 3667225 = 7179^2 + 1915^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (55205261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13801315 + ... + 13801318.

Almost surely, 2^55205266 is an apocalyptic number.

55205266 is a deficient number, since it is larger than the sum of its proper divisors (27602636).

55205266 is a wasteful number, since it uses less digits than its factorization.

55205266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27602635.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 55205266 is about 7430.0246298380. The cubic root of 55205266 is about 380.7677598535.

The spelling of 55205266 in words is "fifty-five million, two hundred five thousand, two hundred sixty-six".