550536 has 64 divisors (see below), whose sum is σ = 1641600. Its totient is φ = 150528.

The previous prime is 550531. The next prime is 550541. The reversal of 550536 is 635055.

It is an interprime number because it is at equal distance from previous prime (550531) and next prime (550541).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 550536.

It is not an unprimeable number, because it can be changed into a prime (550531) by changing a digit.

550536 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4816 + ... + 4928.

It is an arithmetic number, because the mean of its divisors is an integer number (25650).

2⁵⁵⁰⁵³⁶ is an apocalyptic number.

550536 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (820800).

550536 is an abundant number, since it is smaller than the sum of its proper divisors (1091064).

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

550536 is a wasteful number, since it uses less digits than its factorization.

550536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 550536 is about 741.9811318356. The cubic root of 550536 is about 81.9587339461.

The spelling of 550536 in words is "five hundred fifty thousand, five hundred thirty-six".