551345305 has 24 divisors (see below), whose sum is σ = 803103552. Its totient is φ = 361624032.

The previous prime is 551345293. The next prime is 551345339. The reversal of 551345305 is 503543155.

551345305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 551345305 - 2¹⁷ = 551214233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43287 + ... + 54556.

It is an arithmetic number, because the mean of its divisors is an integer number (33462648).

Almost surely, 2^551345305 is an apocalyptic number.

It is an amenable number.

551345305 is a deficient number, since it is larger than the sum of its proper divisors (251758247).

551345305 is a wasteful number, since it uses less digits than its factorization.

551345305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97885 (or 97878 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 31.

The square root of 551345305 is about 23480.7432803989. The cubic root of 551345305 is about 819.9887491020.

The spelling of 551345305 in words is "five hundred fifty-one million, three hundred forty-five thousand, three hundred five".