551317 has 4 divisors (see below), whose sum is σ = 593740. Its totient is φ = 508896.

The previous prime is 551311. The next prime is 551321. The reversal of 551317 is 713155.

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

It can be written as a sum of positive squares in 2 ways, for example, as 221841 + 329476 = 471^2 + 574^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551317 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 (551311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21192 + ... + 21217.

It is an arithmetic number, because the mean of its divisors is an integer number (148435).

2⁵⁵¹³¹⁷ is an apocalyptic number.

It is an amenable number.

551317 is a deficient number, since it is larger than the sum of its proper divisors (42423).

551317 is a wasteful number, since it uses less digits than its factorization.

551317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42422.

The product of its digits is 525, while the sum is 22.

The square root of 551317 is about 742.5072390220. The cubic root of 551317 is about 81.9974716651.

It can be divided in two parts, 551 and 317, that added together give a palindrome (868).

The spelling of 551317 in words is "five hundred fifty-one thousand, three hundred seventeen".