551779 has 8 divisors (see below), whose sum is σ = 588240. Its totient is φ = 516096.

The previous prime is 551773. The next prime is 551801. The reversal of 551779 is 977155.

It is a happy number.

551779 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 cyclic number.

It is not a de Polignac number, because 551779 - 2⁷ = 551651 is a prime.

551779 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (551773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2019 + ... + 2275.

It is an arithmetic number, because the mean of its divisors is an integer number (73530).

2⁵⁵¹⁷⁷⁹ is an apocalyptic number.

551779 is a deficient number, since it is larger than the sum of its proper divisors (36461).

551779 is a wasteful number, since it uses less digits than its factorization.

551779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389.

The product of its digits is 11025, while the sum is 34.

The square root of 551779 is about 742.8182819506. The cubic root of 551779 is about 82.0203697164.

The spelling of 551779 in words is "five hundred fifty-one thousand, seven hundred seventy-nine".