551670 has 64 divisors (see below), whose sum is σ = 1575936. Its totient is φ = 120960.

The previous prime is 551659. The next prime is 551671. The reversal of 551670 is 76155.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 551670.

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 551670.

It is not an unprimeable number, because it can be changed into a prime (551671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7735 + ... + 7805.

It is an arithmetic number, because the mean of its divisors is an integer number (24624).

2⁵⁵¹⁶⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (787968).

551670 is an abundant number, since it is smaller than the sum of its proper divisors (1024266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551670 is a wasteful number, since it uses less digits than its factorization.

551670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 551670 is about 742.7449091041. The cubic root of 551670 is about 82.0149685147.

It can be divided in two parts, 551 and 670, that added together give a palindrome (1221).

The spelling of 551670 in words is "five hundred fifty-one thousand, six hundred seventy".