551853 has 14 divisors (see below), whose sum is σ = 828494. Its totient is φ = 367416.

The previous prime is 551849. The next prime is 551861. The reversal of 551853 is 358155.

It can be written as a sum of positive squares in only one way, i.e., 492804 + 59049 = 702^2 + 243^2 .

It is not a de Polignac number, because 551853 - 2² = 551849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 551853.

It is not an unprimeable number, because it can be changed into a prime (551813) 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 13 ways as a sum of consecutive naturals, for example, 351 + ... + 1107.

2⁵⁵¹⁸⁵³ is an apocalyptic number.

It is an amenable number.

551853 is a deficient number, since it is larger than the sum of its proper divisors (276641).

551853 is an frugal number, since it uses more digits than its factorization.

551853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 760 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 551853 is about 742.8680905787. The cubic root of 551853 is about 82.0240361820.

The spelling of 551853 in words is "five hundred fifty-one thousand, eight hundred fifty-three".