551585 has 8 divisors (see below), whose sum is σ = 668736. Its totient is φ = 436720.

The previous prime is 551581. The next prime is 551587. The reversal of 551585 is 585155.

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

It is not a de Polignac number, because 551585 - 2² = 551581 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (551581) 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, 20 + ... + 1050.

It is an arithmetic number, because the mean of its divisors is an integer number (83592).

2⁵⁵¹⁵⁸⁵ is an apocalyptic number.

It is an amenable number.

551585 is a deficient number, since it is larger than the sum of its proper divisors (117151).

551585 is a wasteful number, since it uses less digits than its factorization.

551585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143.

The product of its digits is 5000, while the sum is 29.

The square root of 551585 is about 742.6876867163. The cubic root of 551585 is about 82.0107560747.

The spelling of 551585 in words is "five hundred fifty-one thousand, five hundred eighty-five".