551120444 has 36 divisors (see below), whose sum is σ = 1123925544. Its totient is φ = 235773216.

The previous prime is 551120413. The next prime is 551120497. The reversal of 551120444 is 444021155.

551120444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123842 + ... + 128214.

It is an arithmetic number, because the mean of its divisors is an integer number (31220154).

Almost surely, 2^551120444 is an apocalyptic number.

It is an amenable number.

551120444 is an abundant number, since it is smaller than the sum of its proper divisors (572805100).

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

551120444 is a wasteful number, since it uses less digits than its factorization.

551120444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5034 (or 5025 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 551120444 is about 23475.9545918798. The cubic root of 551120444 is about 819.8772590428.

Adding to 551120444 its reverse (444021155), we get a palindrome (995141599).

The spelling of 551120444 in words is "five hundred fifty-one million, one hundred twenty thousand, four hundred forty-four".