550406431 has 8 divisors (see below), whose sum is σ = 562600080. Its totient is φ = 538279872.

The previous prime is 550406429. The next prime is 550406503. The reversal of 550406431 is 134604055.

550406431 is a nontrivial binomial coefficient, being equal to C(33179, 2).

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

It is not a de Polignac number, because 550406431 - 2¹ = 550406429 is a prime.

It is a super-2 number, since 2×550406431² = 605894478572315522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 550406431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550406401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1 + ... + 33178.

It is an arithmetic number, because the mean of its divisors is an integer number (70325010).

Almost surely, 2^550406431 is an apocalyptic number.

550406431 is the 33178-th triangular number.

550406431 is the 11060-th centered nonagonal number.

550406431 is a deficient number, since it is larger than the sum of its proper divisors (12193649).

550406431 is a wasteful number, since it uses less digits than its factorization.

550406431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33545.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 550406431 is about 23460.7423369338. The cubic root of 550406431 is about 819.5230376142.

The spelling of 550406431 in words is "five hundred fifty million, four hundred six thousand, four hundred thirty-one".