556465520 has 80 divisors (see below), whose sum is σ = 1397723040. Its totient is φ = 204813312.

The previous prime is 556465517. The next prime is 556465549. The reversal of 556465520 is 25564655.

It is a happy number.

556465520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435122 + ... + 436398.

It is an arithmetic number, because the mean of its divisors is an integer number (17471538).

Almost surely, 2^556465520 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 556465520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (698861520).

556465520 is an abundant number, since it is smaller than the sum of its proper divisors (841257520).

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

556465520 is a wasteful number, since it uses less digits than its factorization.

556465520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722 (or 1716 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 38.

The square root of 556465520 is about 23589.5214025211. The cubic root of 556465520 is about 822.5192796730.

The spelling of 556465520 in words is "five hundred fifty-six million, four hundred sixty-five thousand, five hundred twenty".