56803518 has 80 divisors (see below), whose sum is σ = 134077680. Its totient is φ = 17950464.

The previous prime is 56803507. The next prime is 56803519. The reversal of 56803518 is 81530865.

56803518 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56803519) by changing a digit.

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, 502630 + ... + 502742.

It is an arithmetic number, because the mean of its divisors is an integer number (1675971).

Almost surely, 2^56803518 is an apocalyptic number.

56803518 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 56803518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67038840).

56803518 is an abundant number, since it is smaller than the sum of its proper divisors (77274162).

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

56803518 is a wasteful number, since it uses less digits than its factorization.

56803518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 56803518 is about 7536.8108640193. The cubic root of 56803518 is about 384.4074045257.

The spelling of 56803518 in words is "fifty-six million, eight hundred three thousand, five hundred eighteen".