551072272 has 80 divisors (see below), whose sum is σ = 1200458880. Its totient is φ = 243685376.

The previous prime is 551072201. The next prime is 551072279. The reversal of 551072272 is 272270155.

It is not an unprimeable number, because it can be changed into a prime (551072279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368358 + ... + 369850.

It is an arithmetic number, because the mean of its divisors is an integer number (15005736).

Almost surely, 2^551072272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551072272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (600229440).

551072272 is an abundant number, since it is smaller than the sum of its proper divisors (649386608).

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

551072272 is a wasteful number, since it uses less digits than its factorization.

551072272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600 (or 1594 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 551072272 is about 23474.9285834909. The cubic root of 551072272 is about 819.8533705694.

The spelling of 551072272 in words is "five hundred fifty-one million, seventy-two thousand, two hundred seventy-two".