550481 has 4 divisors (see below), whose sum is σ = 552000. Its totient is φ = 548964.

The previous prime is 550471. The next prime is 550489. The reversal of 550481 is 184055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550481 is a prime.

It is a super-2 number, since 2×550481² = 606058662722, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (550489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140 + ... + 1058.

It is an arithmetic number, because the mean of its divisors is an integer number (138000).

2⁵⁵⁰⁴⁸¹ is an apocalyptic number.

It is an amenable number.

550481 is a deficient number, since it is larger than the sum of its proper divisors (1519).

550481 is an equidigital number, since it uses as much as digits as its factorization.

550481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 550481 is about 741.9440679728. The cubic root of 550481 is about 81.9560045572.

It can be divided in two parts, 5 and 50481, that multiplied together give a triangular number (252405 = T₇₁₀).

The spelling of 550481 in words is "five hundred fifty thousand, four hundred eighty-one".