551200321 has 8 divisors (see below), whose sum is σ = 630172224. Its totient is φ = 472285680.

The previous prime is 551200291. The next prime is 551200337. The reversal of 551200321 is 123002155.

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 551200321 - 2⁵ = 551200289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551200381) 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, 8811 + ... + 34351.

It is an arithmetic number, because the mean of its divisors is an integer number (78771528).

Almost surely, 2^551200321 is an apocalyptic number.

It is an amenable number.

551200321 is a deficient number, since it is larger than the sum of its proper divisors (78971903).

551200321 is a wasteful number, since it uses less digits than its factorization.

551200321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28631.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 551200321 is about 23477.6557816150. The cubic root of 551200321 is about 819.9168669439.

Adding to 551200321 its reverse (123002155), we get a palindrome (674202476).

The spelling of 551200321 in words is "five hundred fifty-one million, two hundred thousand, three hundred twenty-one".