56975986 has 8 divisors (see below), whose sum is σ = 85545180. Its totient is φ = 28460928.

The previous prime is 56975977. The next prime is 56975987. The reversal of 56975986 is 68957965.

It is a happy number.

56975986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 52113961 + 4862025 = 7219^2 + 2205^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (56975987) 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 3 ways as a sum of consecutive naturals, for example, 10791 + ... + 15178.

Almost surely, 2^56975986 is an apocalyptic number.

56975986 is a deficient number, since it is larger than the sum of its proper divisors (28569194).

56975986 is a wasteful number, since it uses less digits than its factorization.

56975986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27068.

The product of its digits is 4082400, while the sum is 55.

The square root of 56975986 is about 7548.2439017297. The cubic root of 56975986 is about 384.7960599770.

The spelling of 56975986 in words is "fifty-six million, nine hundred seventy-five thousand, nine hundred eighty-six".