551305144 has 16 divisors (see below), whose sum is σ = 1113212520. Its totient is φ = 254448480.

The previous prime is 551305133. The next prime is 551305151. The reversal of 551305144 is 441503155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2650402 + ... + 2650609.

Almost surely, 2^551305144 is an apocalyptic number.

It is an amenable number.

551305144 is an abundant number, since it is smaller than the sum of its proper divisors (561907376).

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

551305144 is a wasteful number, since it uses less digits than its factorization.

551305144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5301030 (or 5301026 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 551305144 is about 23479.8880746906. Note that the first 3 decimals coincide. The cubic root of 551305144 is about 819.9688387920.

Adding to 551305144 its reverse (441503155), we get a palindrome (992808299).

The spelling of 551305144 in words is "five hundred fifty-one million, three hundred five thousand, one hundred forty-four".