555216720 has 40 divisors (see below), whose sum is σ = 1721172576. Its totient is φ = 148057728.

The previous prime is 555216707. The next prime is 555216733. The reversal of 555216720 is 27612555.

555216720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (555216707) and next prime (555216733).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1156462 + ... + 1156941.

Almost surely, 2^555216720 is an apocalyptic number.

It is an amenable number.

555216720 is an abundant number, since it is smaller than the sum of its proper divisors (1165955856).

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

555216720 is a wasteful number, since it uses less digits than its factorization.

555216720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313419 (or 2313413 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 555216720 is about 23563.0371556809. The cubic root of 555216720 is about 821.9035293869.

The spelling of 555216720 in words is "five hundred fifty-five million, two hundred sixteen thousand, seven hundred twenty".