551232313 has 8 divisors (see below), whose sum is σ = 580625600. Its totient is φ = 521877168.

The previous prime is 551232307. The next prime is 551232317. The reversal of 551232313 is 313232155.

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 551232313 - 2²¹ = 549135161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551232317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23020 + ... + 40402.

It is an arithmetic number, because the mean of its divisors is an integer number (72578200).

Almost surely, 2^551232313 is an apocalyptic number.

It is an amenable number.

551232313 is a deficient number, since it is larger than the sum of its proper divisors (29393287).

551232313 is a wasteful number, since it uses less digits than its factorization.

551232313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19071.

The product of its digits is 2700, while the sum is 25.

The square root of 551232313 is about 23478.3371003996. The cubic root of 551232313 is about 819.9327294606.

Adding to 551232313 its reverse (313232155), we get a palindrome (864464468).

The spelling of 551232313 in words is "five hundred fifty-one million, two hundred thirty-two thousand, three hundred thirteen".