56985538 has 4 divisors (see below), whose sum is σ = 85478310. Its totient is φ = 28492768.

The previous prime is 56985499. The next prime is 56985553. The reversal of 56985538 is 83558965.

It is a happy number.

56985538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 56505289 + 480249 = 7517^2 + 693^2 .

It is a super-2 number, since 2×56985538² = 6494703082298888, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 56985491 and 56985500.

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 as a sum of consecutive naturals, namely, 14246383 + ... + 14246386.

Almost surely, 2^56985538 is an apocalyptic number.

56985538 is a deficient number, since it is larger than the sum of its proper divisors (28492772).

56985538 is a wasteful number, since it uses less digits than its factorization.

56985538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28492771.

The product of its digits is 1296000, while the sum is 49.

The square root of 56985538 is about 7548.8766051645. The cubic root of 56985538 is about 384.8175624077.

It can be divided in two parts, 5698 and 5538, that added together give a square (11236 = 106²).

The spelling of 56985538 in words is "fifty-six million, nine hundred eighty-five thousand, five hundred thirty-eight".