55290306 has 8 divisors (see below), whose sum is σ = 110580624. Its totient is φ = 18430100.

The previous prime is 55290259. The next prime is 55290317. The reversal of 55290306 is 60309255.

55290306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

55290306 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 4607520 + ... + 4607531.

It is an arithmetic number, because the mean of its divisors is an integer number (13822578).

Almost surely, 2^55290306 is an apocalyptic number.

55290306 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55290306 is a wasteful number, since it uses less digits than its factorization.

55290306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9215056.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 55290306 is about 7435.7451543204. The cubic root of 55290306 is about 380.9631752561.

The spelling of 55290306 in words is "fifty-five million, two hundred ninety thousand, three hundred six".