551424020 has 24 divisors (see below), whose sum is σ = 1323417984. Its totient is φ = 189059616.

The previous prime is 551424017. The next prime is 551424043. The reversal of 551424020 is 20424155.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1969232 + ... + 1969511.

It is an arithmetic number, because the mean of its divisors is an integer number (55142416).

Almost surely, 2^551424020 is an apocalyptic number.

It is an amenable number.

551424020 is an abundant number, since it is smaller than the sum of its proper divisors (771993964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551424020 is a wasteful number, since it uses less digits than its factorization.

551424020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938759 (or 3938757 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 551424020 is about 23482.4193813159. The cubic root of 551424020 is about 820.0277702275.

Adding to 551424020 its reverse (20424155), we get a palindrome (571848175).

The spelling of 551424020 in words is "five hundred fifty-one million, four hundred twenty-four thousand, twenty".