56505306 has 48 divisors (see below), whose sum is σ = 133795872. Its totient is φ = 15803040.

The previous prime is 56505283. The next prime is 56505329. The reversal of 56505306 is 60350565.

It is an interprime number because it is at equal distance from previous prime (56505283) and next prime (56505329).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6445 + ... + 12431.

It is an arithmetic number, because the mean of its divisors is an integer number (2787414).

Almost surely, 2^56505306 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56505306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66897936).

56505306 is an abundant number, since it is smaller than the sum of its proper divisors (77290566).

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

56505306 is a wasteful number, since it uses less digits than its factorization.

56505306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6027 (or 6016 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 56505306 is about 7517.0011307702. The cubic root of 56505306 is about 383.7335255194.

The spelling of 56505306 in words is "fifty-six million, five hundred five thousand, three hundred six".