551736 has 48 divisors (see below), whose sum is σ = 1528800. Its totient is φ = 179712.

The previous prime is 551731. The next prime is 551743. The reversal of 551736 is 637155.

It is a super-2 number, since 2×551736² = 608825227392, which contains 22 as substring.

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 551736.

It is not an unprimeable number, because it can be changed into a prime (551731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5640 + ... + 5736.

It is an arithmetic number, because the mean of its divisors is an integer number (31850).

2⁵⁵¹⁷³⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764400).

551736 is an abundant number, since it is smaller than the sum of its proper divisors (977064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551736 is a wasteful number, since it uses less digits than its factorization.

551736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 181 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 551736 is about 742.7893375648. The cubic root of 551736 is about 82.0182390521.

The spelling of 551736 in words is "five hundred fifty-one thousand, seven hundred thirty-six".