55042266 has 16 divisors (see below), whose sum is σ = 114871104. Its totient is φ = 17549664.

The previous prime is 55042241. The next prime is 55042271. The reversal of 55042266 is 66224055.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199291 + ... + 199566.

It is an arithmetic number, because the mean of its divisors is an integer number (7179444).

Almost surely, 2^55042266 is an apocalyptic number.

55042266 is an abundant number, since it is smaller than the sum of its proper divisors (59828838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55042266 is a wasteful number, since it uses less digits than its factorization.

55042266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398885.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 55042266 is about 7419.0475129898. The cubic root of 55042266 is about 380.3926366414.

The spelling of 55042266 in words is "fifty-five million, forty-two thousand, two hundred sixty-six".