551879 has 4 divisors (see below), whose sum is σ = 560184. Its totient is φ = 543576.

The previous prime is 551861. The next prime is 551909. The reversal of 551879 is 978155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551809) 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 3 ways as a sum of consecutive naturals, for example, 4052 + ... + 4185.

It is an arithmetic number, because the mean of its divisors is an integer number (140046).

2⁵⁵¹⁸⁷⁹ is an apocalyptic number.

551879 is a deficient number, since it is larger than the sum of its proper divisors (8305).

551879 is an equidigital number, since it uses as much as digits as its factorization.

551879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8304.

The product of its digits is 12600, while the sum is 35.

The square root of 551879 is about 742.8855901147. The cubic root of 551879 is about 82.0253243218.

The spelling of 551879 in words is "five hundred fifty-one thousand, eight hundred seventy-nine".