551313 has 16 divisors (see below), whose sum is σ = 933760. Its totient is φ = 314928.

The previous prime is 551311. The next prime is 551321. The reversal of 551313 is 313155.

It is a happy number.

It is not a de Polignac number, because 551313 - 2¹ = 551311 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 551313.

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 15 ways as a sum of consecutive naturals, for example, 1270 + ... + 1647.

It is an arithmetic number, because the mean of its divisors is an integer number (58360).

2⁵⁵¹³¹³ is an apocalyptic number.

It is an amenable number.

551313 is a deficient number, since it is larger than the sum of its proper divisors (382447).

551313 is a wasteful number, since it uses less digits than its factorization.

551313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2933 (or 2927 counting only the distinct ones).

The product of its digits is 225, while the sum is 18.

The square root of 551313 is about 742.5045454406. The cubic root of 551313 is about 81.9972733577.

Adding to 551313 its reverse (313155), we get a palindrome (864468).

The spelling of 551313 in words is "five hundred fifty-one thousand, three hundred thirteen".