551206 has 8 divisors (see below), whose sum is σ = 831600. Its totient is φ = 274008.

The previous prime is 551197. The next prime is 551207. The reversal of 551206 is 602155.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551207) by changing a digit.

551206 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, 306 + ... + 1093.

It is an arithmetic number, because the mean of its divisors is an integer number (103950).

2⁵⁵¹²⁰⁶ is an apocalyptic number.

551206 is a deficient number, since it is larger than the sum of its proper divisors (280394).

551206 is a wasteful number, since it uses less digits than its factorization.

551206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598.

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

The square root of 551206 is about 742.4324885133. The cubic root of 551206 is about 81.9919682794.

It can be divided in two parts, 551 and 206, that added together give a palindrome (757).

The spelling of 551206 in words is "five hundred fifty-one thousand, two hundred six".