555721048089 has 81 divisors (see below), whose sum is σ = 874042892671. Its totient is φ = 340171501440.

The previous prime is 555721048087. The next prime is 555721048133. The reversal of 555721048089 is 980840127555.

The square root of 555721048089 is 745467.

It is a perfect power (a square), and thus also a powerful number.

555721048089 is a `hidden beast` number, since 5 + 5 + 5 + 72 + 10 + 480 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 432654795225 + 123066252864 = 657765^2 + 350808^2 .

It is not a de Polignac number, because 555721048089 - 2¹ = 555721048087 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (555721048087) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1786884244 + ... + 1786884554.

Almost surely, 2^555721048089 is an apocalyptic number.

555721048089 is the 745467-th square number.

555721048089 is the 372734-th centered octagonal number.

It is an amenable number.

555721048089 is a deficient number, since it is larger than the sum of its proper divisors (318321844582).

555721048089 is an equidigital number, since it uses as much as digits as its factorization.

555721048089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 54.

The spelling of 555721048089 in words is "five hundred fifty-five billion, seven hundred twenty-one million, forty-eight thousand, eighty-nine".