551606 has 8 divisors (see below), whose sum is σ = 902664. Its totient is φ = 250720.

The previous prime is 551597. The next prime is 551651. The reversal of 551606 is 606155.

551606 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 Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 551606.

It is an unprimeable number.

551606 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 3 ways as a sum of consecutive naturals, for example, 12515 + ... + 12558.

It is an arithmetic number, because the mean of its divisors is an integer number (112833).

2⁵⁵¹⁶⁰⁶ is an apocalyptic number.

551606 is a deficient number, since it is larger than the sum of its proper divisors (351058).

551606 is a wasteful number, since it uses less digits than its factorization.

551606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25086.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 551606 is about 742.7018244222. The cubic root of 551606 is about 82.0117968354.

It can be divided in two parts, 55 and 1606, that added together give a palindrome (1661).

The spelling of 551606 in words is "five hundred fifty-one thousand, six hundred six".