551608 has 24 divisors (see below), whose sum is σ = 1097280. Its totient is φ = 259920.

The previous prime is 551597. The next prime is 551651. The reversal of 551608 is 806155.

It is a congruent number.

It is an unprimeable number.

551608 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2793 + ... + 2983.

It is an arithmetic number, because the mean of its divisors is an integer number (45720).

2⁵⁵¹⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

551608 is a deficient number, since it is larger than the sum of its proper divisors (545672).

551608 is a wasteful number, since it uses less digits than its factorization.

551608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 551608 is about 742.7031708563. The cubic root of 551608 is about 82.0118959541.

The spelling of 551608 in words is "five hundred fifty-one thousand, six hundred eight".