56508720 has 80 divisors (see below), whose sum is σ = 176319072. Its totient is φ = 14970880.

The previous prime is 56508713. The next prime is 56508721. The reversal of 56508720 is 2780565.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (56508721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40840 + ... + 42200.

Almost surely, 2^56508720 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 56508720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88159536).

56508720 is an abundant number, since it is smaller than the sum of its proper divisors (119810352).

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

56508720 is a wasteful number, since it uses less digits than its factorization.

56508720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550 (or 1544 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 56508720 is about 7517.2282125794. The cubic root of 56508720 is about 383.7412536424.

The spelling of 56508720 in words is "fifty-six million, five hundred eight thousand, seven hundred twenty".