550864 has 10 divisors (see below), whose sum is σ = 1067330. Its totient is φ = 275424.

The previous prime is 550861. The next prime is 550903. The reversal of 550864 is 468055.

550864 = 23² + 24² + ... + 118².

It can be written as a sum of positive squares in only one way, i.e., 384400 + 166464 = 620^2 + 408^2 .

It is a super-2 number, since 2×550864² = 606902292992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17199 + ... + 17230.

It is an arithmetic number, because the mean of its divisors is an integer number (106733).

2⁵⁵⁰⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

550864 is a deficient number, since it is larger than the sum of its proper divisors (516466).

550864 is a wasteful number, since it uses less digits than its factorization.

550864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34437 (or 34431 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 550864 is about 742.2021288032. The cubic root of 550864 is about 81.9750072553.

The spelling of 550864 in words is "five hundred fifty thousand, eight hundred sixty-four".