551630 has 8 divisors (see below), whose sum is σ = 992952. Its totient is φ = 220648.

The previous prime is 551597. The next prime is 551651. The reversal of 551630 is 36155.

551630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27572 + ... + 27591.

It is an arithmetic number, because the mean of its divisors is an integer number (124119).

2⁵⁵¹⁶³⁰ is an apocalyptic number.

551630 is a deficient number, since it is larger than the sum of its proper divisors (441322).

551630 is a wasteful number, since it uses less digits than its factorization.

551630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55170.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 551630 is about 742.7179814708. The cubic root of 551630 is about 82.0129862439.

Adding to 551630 its reverse (36155), we get a palindrome (587785).

The spelling of 551630 in words is "five hundred fifty-one thousand, six hundred thirty".