550721120 has 48 divisors (see below), whose sum is σ = 1377619488. Its totient is φ = 207329280.

The previous prime is 550721111. The next prime is 550721123. The reversal of 550721120 is 21127055.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550721123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98516 + ... + 103955.

It is an arithmetic number, because the mean of its divisors is an integer number (28700406).

Almost surely, 2^550721120 is an apocalyptic number.

It is an amenable number.

550721120 is an abundant number, since it is smaller than the sum of its proper divisors (826898368).

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

550721120 is a wasteful number, since it uses less digits than its factorization.

550721120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202503 (or 202495 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 550721120 is about 23467.4480930501. The cubic root of 550721120 is about 819.6791923735.

Adding to 550721120 its reverse (21127055), we get a palindrome (571848175).

The spelling of 550721120 in words is "five hundred fifty million, seven hundred twenty-one thousand, one hundred twenty".