550431 has 12 divisors (see below), whose sum is σ = 908752. Its totient is φ = 314496.

The previous prime is 550427. The next prime is 550439. The reversal of 550431 is 134055.

550431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 550431 - 2² = 550427 is a prime.

It is a super-2 number, since 2×550431² = 605948571522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550439) 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, 4306 + ... + 4431.

2⁵⁵⁰⁴³¹ is an apocalyptic number.

550431 is a deficient number, since it is larger than the sum of its proper divisors (358321).

550431 is a wasteful number, since it uses less digits than its factorization.

550431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8750 (or 8747 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 550431 is about 741.9103719453. The cubic root of 550431 is about 81.9535231368.

Adding to 550431 its reverse (134055), we get a palindrome (684486).

The spelling of 550431 in words is "five hundred fifty thousand, four hundred thirty-one".