550020621 has 16 divisors (see below), whose sum is σ = 745210368. Its totient is φ = 360769200.

The previous prime is 550020587. The next prime is 550020629. The reversal of 550020621 is 126020055.

It is not a de Polignac number, because 550020621 - 2⁶ = 550020557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550020629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302806 + ... + 304616.

It is an arithmetic number, because the mean of its divisors is an integer number (46575648).

Almost surely, 2^550020621 is an apocalyptic number.

It is an amenable number.

550020621 is a deficient number, since it is larger than the sum of its proper divisors (195189747).

550020621 is a wasteful number, since it uses less digits than its factorization.

550020621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3392.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 550020621 is about 23452.5184361936. The cubic root of 550020621 is about 819.3315100023.

Adding to 550020621 its reverse (126020055), we get a palindrome (676040676).

The spelling of 550020621 in words is "five hundred fifty million, twenty thousand, six hundred twenty-one".