551220480 has 216 divisors, whose sum is σ = 1941881760. Its totient is φ = 144322560.

The previous prime is 551220479. The next prime is 551220497. The reversal of 551220480 is 84022155.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 679275 + ... + 680085.

Almost surely, 2^551220480 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 551220480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (970940880).

551220480 is an abundant number, since it is smaller than the sum of its proper divisors (1390661280).

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

551220480 is a wasteful number, since it uses less digits than its factorization.

551220480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897 (or 880 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 551220480 is about 23478.0851007913. The cubic root of 551220480 is about 819.9268624041.

The spelling of 551220480 in words is "five hundred fifty-one million, two hundred twenty thousand, four hundred eighty".