551311345 has 8 divisors (see below), whose sum is σ = 712463976. Its totient is φ = 407122176.

The previous prime is 551311333. The next prime is 551311361. The reversal of 551311345 is 543113155.

It can be written as a sum of positive squares in 4 ways, for example, as 18809569 + 532501776 = 4337^2 + 23076^2 .

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 551311345 - 2¹³ = 551303153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4240792 + ... + 4240921.

It is an arithmetic number, because the mean of its divisors is an integer number (89057997).

Almost surely, 2^551311345 is an apocalyptic number.

It is an amenable number.

551311345 is a deficient number, since it is larger than the sum of its proper divisors (161152631).

551311345 is a wasteful number, since it uses less digits than its factorization.

551311345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8481731.

The product of its digits is 4500, while the sum is 28.

The square root of 551311345 is about 23480.0201235007. The cubic root of 551311345 is about 819.9719130772.

The spelling of 551311345 in words is "five hundred fifty-one million, three hundred eleven thousand, three hundred forty-five".