55209266 has 16 divisors (see below), whose sum is σ = 94807104. Its totient is φ = 23620464.

The previous prime is 55209227. The next prime is 55209277. The reversal of 55209266 is 66290255.

55209266 = T₄₉ + T₅₀ + ... + T₆₉₁.

55209266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 5936 + ... + 12068.

It is an arithmetic number, because the mean of its divisors is an integer number (5925444).

Almost surely, 2^55209266 is an apocalyptic number.

55209266 is a deficient number, since it is larger than the sum of its proper divisors (39597838).

55209266 is a wasteful number, since it uses less digits than its factorization.

55209266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6785.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 55209266 is about 7430.2938030740. The cubic root of 55209266 is about 380.7769560429.

The spelling of 55209266 in words is "fifty-five million, two hundred nine thousand, two hundred sixty-six".