551340305 has 4 divisors (see below), whose sum is σ = 661608372. Its totient is φ = 441072240.

The previous prime is 551340287. The next prime is 551340329. The reversal of 551340305 is 503043155.

551340305 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84953089 + 466387216 = 9217^2 + 21596^2 .

It is not a de Polignac number, because 551340305 - 2⁶ = 551340241 is a prime.

It is a super-2 number, since 2×551340305² = 607952263834986050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55134026 + ... + 55134035.

It is an arithmetic number, because the mean of its divisors is an integer number (165402093).

Almost surely, 2^551340305 is an apocalyptic number.

It is an amenable number.

551340305 is a deficient number, since it is larger than the sum of its proper divisors (110268067).

551340305 is a wasteful number, since it uses less digits than its factorization.

551340305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110268066.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 551340305 is about 23480.6368099334. The cubic root of 551340305 is about 819.9862703432.

The spelling of 551340305 in words is "five hundred fifty-one million, three hundred forty thousand, three hundred five".