55306066 has 8 divisors (see below), whose sum is σ = 87839100. Its totient is φ = 26026368.

The previous prime is 55306061. The next prime is 55306067. The reversal of 55306066 is 66060355.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41873841 + 13432225 = 6471^2 + 3665^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (55306061) 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, 813291 + ... + 813358.

Almost surely, 2^55306066 is an apocalyptic number.

55306066 is a deficient number, since it is larger than the sum of its proper divisors (32533034).

55306066 is a wasteful number, since it uses less digits than its factorization.

55306066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626668.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 55306066 is about 7436.8048246542. The cubic root of 55306066 is about 380.9993685162. Note that the first 3 decimals are identical.

The spelling of 55306066 in words is "fifty-five million, three hundred six thousand, sixty-six".