551342303 has 4 divisors (see below), whose sum is σ = 551723208. Its totient is φ = 550961400.

The previous prime is 551342261. The next prime is 551342353. The reversal of 551342303 is 303243155.

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

It is a cyclic number.

It is not a de Polignac number, because 551342303 - 2¹⁰ = 551341279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551342353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188273 + ... + 191178.

It is an arithmetic number, because the mean of its divisors is an integer number (137930802).

Almost surely, 2^551342303 is an apocalyptic number.

551342303 is a deficient number, since it is larger than the sum of its proper divisors (380905).

551342303 is a wasteful number, since it uses less digits than its factorization.

551342303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380904.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 551342303 is about 23480.6793555894. The cubic root of 551342303 is about 819.9872608570.

Adding to 551342303 its reverse (303243155), we get a palindrome (854585458).

The spelling of 551342303 in words is "five hundred fifty-one million, three hundred forty-two thousand, three hundred three".