56005020 has 120 divisors (see below), whose sum is σ = 177585408. Its totient is φ = 14774400.

The previous prime is 56005009. The next prime is 56005031. The reversal of 56005020 is 2050065.

56005020 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 (56005009) and next prime (56005031).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 56004984 and 56005002.

It is a congruent number.

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 39 ways as a sum of consecutive naturals, for example, 293125 + ... + 293315.

Almost surely, 2^56005020 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 56005020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88792704).

56005020 is an abundant number, since it is smaller than the sum of its proper divisors (121580388).

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

56005020 is a wasteful number, since it uses less digits than its factorization.

56005020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 56005020 is about 7483.6501788900. The cubic root of 56005020 is about 382.5976682540.

Adding to 56005020 its reverse (2050065), we get a palindrome (58055085).

The spelling of 56005020 in words is "fifty-six million, five thousand, twenty".