550765 has 8 divisors (see below), whose sum is σ = 672480. Its totient is φ = 432912.

The previous prime is 550763. The next prime is 550789. The reversal of 550765 is 567055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 550765 - 2¹ = 550763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550763) 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 7 ways as a sum of consecutive naturals, for example, 639 + ... + 1228.

It is an arithmetic number, because the mean of its divisors is an integer number (84060).

2⁵⁵⁰⁷⁶⁵ is an apocalyptic number.

It is an amenable number.

550765 is a deficient number, since it is larger than the sum of its proper divisors (121715).

550765 is a wasteful number, since it uses less digits than its factorization.

550765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 550765 is about 742.1354323841. The cubic root of 550765 is about 81.9700961751.

Subtracting 550765 from its reverse (567055), we obtain a triangular number (16290 = T₁₈₀).

The spelling of 550765 in words is "five hundred fifty thousand, seven hundred sixty-five".