551771 has 8 divisors (see below), whose sum is σ = 609024. Its totient is φ = 495720.

The previous prime is 551767. The next prime is 551773. The reversal of 551771 is 177155.

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 551771 - 2² = 551767 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 551771.

It is not an unprimeable number, because it can be changed into a prime (551773) 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 7 ways as a sum of consecutive naturals, for example, 890 + ... + 1376.

It is an arithmetic number, because the mean of its divisors is an integer number (76128).

2⁵⁵¹⁷⁷¹ is an apocalyptic number.

551771 is a deficient number, since it is larger than the sum of its proper divisors (57253).

551771 is a wasteful number, since it uses less digits than its factorization.

551771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601.

The product of its digits is 1225, while the sum is 26.

The square root of 551771 is about 742.8128970340. The cubic root of 551771 is about 82.0199733221.

Multiplying 551771 by its sum of digits (26), we get a triangular number (14346046 = T₅₃₅₆).

The spelling of 551771 in words is "five hundred fifty-one thousand, seven hundred seventy-one".