55290305 has 8 divisors (see below), whose sum is σ = 75826752. Its totient is φ = 37913328.

The previous prime is 55290259. The next prime is 55290317. The reversal of 55290305 is 50309255.

55290305 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.

It is a cyclic number.

It is not a de Polignac number, because 55290305 - 2⁶ = 55290241 is a prime.

It is a Duffinian 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, 789827 + ... + 789896.

It is an arithmetic number, because the mean of its divisors is an integer number (9478344).

Almost surely, 2^55290305 is an apocalyptic number.

It is an amenable number.

55290305 is a deficient number, since it is larger than the sum of its proper divisors (20536447).

55290305 is a wasteful number, since it uses less digits than its factorization.

55290305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579735.

The product of its (nonzero) digits is 6750, while the sum is 29.

The square root of 55290305 is about 7435.7450870777. The cubic root of 55290305 is about 380.9631729594.

The spelling of 55290305 in words is "fifty-five million, two hundred ninety thousand, three hundred five".