550008720 has 60 divisors (see below), whose sum is σ = 1847115036. Its totient is φ = 146668800.

The previous prime is 550008709. The next prime is 550008779. The reversal of 550008720 is 27800055.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 437479056 + 112529664 = 20916^2 + 10608^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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, 381231 + ... + 382670.

Almost surely, 2^550008720 is an apocalyptic number.

It is an amenable number.

550008720 is an abundant number, since it is smaller than the sum of its proper divisors (1297106316).

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

550008720 is a wasteful number, since it uses less digits than its factorization.

550008720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763920 (or 763911 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 550008720 is about 23452.2647094049. The cubic root of 550008720 is about 819.3256005665.

Adding to 550008720 its reverse (27800055), we get a palindrome (577808775).

The spelling of 550008720 in words is "five hundred fifty million, eight thousand, seven hundred twenty".