550425421 has 16 divisors (see below), whose sum is σ = 713104000. Its totient is φ = 412579008.

The previous prime is 550425389. The next prime is 550425427. The reversal of 550425421 is 124524055.

550425421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 550425421 - 2⁵ = 550425389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 550425421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550425427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157446 + ... + 160903.

It is an arithmetic number, because the mean of its divisors is an integer number (44569000).

Almost surely, 2^550425421 is an apocalyptic number.

It is an amenable number.

550425421 is a deficient number, since it is larger than the sum of its proper divisors (162678579).

550425421 is a wasteful number, since it uses less digits than its factorization.

550425421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318388.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 550425421 is about 23461.1470520944. The cubic root of 550425421 is about 819.5324625062.

Adding to 550425421 its reverse (124524055), we get a palindrome (674949476).

The spelling of 550425421 in words is "five hundred fifty million, four hundred twenty-five thousand, four hundred twenty-one".