551220044 has 12 divisors (see below), whose sum is σ = 964860624. Its totient is φ = 275545584.

The previous prime is 551220037. The next prime is 551220049. The reversal of 551220044 is 440022155.

It is a happy number.

551220044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (551220049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6737 + ... + 33879.

It is an arithmetic number, because the mean of its divisors is an integer number (80405052).

Almost surely, 2^551220044 is an apocalyptic number.

It is an amenable number.

551220044 is a deficient number, since it is larger than the sum of its proper divisors (413640580).

551220044 is a wasteful number, since it uses less digits than its factorization.

551220044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32224 (or 32222 counting only the distinct ones).

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

The square root of 551220044 is about 23478.0758155348. The cubic root of 551220044 is about 819.9266462243.

Adding to 551220044 its reverse (440022155), we get a palindrome (991242199).

The spelling of 551220044 in words is "five hundred fifty-one million, two hundred twenty thousand, forty-four".