550403445431 has 8 divisors (see below), whose sum is σ = 629038471680. Its totient is φ = 471769909848.

The previous prime is 550403445401. The next prime is 550403445433. The reversal of 550403445431 is 134544304055.

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 550403445431 - 2⁶ = 550403445367 is a prime.

It is a super-3 number, since 3×550403445431³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550403445433) 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, 581390 + ... + 1199508.

It is an arithmetic number, because the mean of its divisors is an integer number (78629808960).

Almost surely, 2^550403445431 is an apocalyptic number.

550403445431 is a deficient number, since it is larger than the sum of its proper divisors (78635026249).

550403445431 is a wasteful number, since it uses less digits than its factorization.

550403445431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745333.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 550403445431 its reverse (134544304055), we get a palindrome (684947749486).

The spelling of 550403445431 in words is "five hundred fifty billion, four hundred three million, four hundred forty-five thousand, four hundred thirty-one".