551345303 has 6 divisors (see below), whose sum is σ = 571013664. Its totient is φ = 532332584.

The previous prime is 551345293. The next prime is 551345339. The reversal of 551345303 is 303543155.

It is not a de Polignac number, because 551345303 - 2¹² = 551341207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551345393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 326951 + ... + 328632.

It is an arithmetic number, because the mean of its divisors is an integer number (95168944).

Almost surely, 2^551345303 is an apocalyptic number.

551345303 is a deficient number, since it is larger than the sum of its proper divisors (19668361).

551345303 is an equidigital number, since it uses as much as digits as its factorization.

551345303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655641 (or 655612 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 551345303 is about 23480.7432378109. The cubic root of 551345303 is about 819.9887481105.

Adding to 551345303 its reverse (303543155), we get a palindrome (854888458).

The spelling of 551345303 in words is "five hundred fifty-one million, three hundred forty-five thousand, three hundred three".