56446530 has 192 divisors, whose sum is σ = 173352960. Its totient is φ = 11684736.

The previous prime is 56446519. The next prime is 56446541. The reversal of 56446530 is 3564465.

56446530 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 (56446519) and next prime (56446541).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56446491 and 56446500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1200967 + ... + 1201013.

It is an arithmetic number, because the mean of its divisors is an integer number (902880).

Almost surely, 2^56446530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56446530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86676480).

56446530 is an abundant number, since it is smaller than the sum of its proper divisors (116906430).

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

56446530 is a wasteful number, since it uses less digits than its factorization.

56446530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 56446530 is about 7513.0905757884. The cubic root of 56446530 is about 383.6004280102.

The spelling of 56446530 in words is "fifty-six million, four hundred forty-six thousand, five hundred thirty".