56805000 has 160 divisors (see below), whose sum is σ = 203184960. Its totient is φ = 12960000.

The previous prime is 56804983. The next prime is 56805019. The reversal of 56805000 is 50865.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 104730 + ... + 105270.

It is an arithmetic number, because the mean of its divisors is an integer number (1269906).

Almost surely, 2^56805000 is an apocalyptic number.

56805000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56805000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101592480).

56805000 is an abundant number, since it is smaller than the sum of its proper divisors (146379960).

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

56805000 is a wasteful number, since it uses less digits than its factorization.

56805000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577 (or 558 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 56805000 is about 7536.9091808247. The cubic root of 56805000 is about 384.4107475511.

Adding to 56805000 its reverse (50865), we get a palindrome (56855865).

The spelling of 56805000 in words is "fifty-six million, eight hundred five thousand".