56809982 has 4 divisors (see below), whose sum is σ = 85214976. Its totient is φ = 28404990.

The previous prime is 56809939. The next prime is 56809997. The reversal of 56809982 is 28990865.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14202494 + ... + 14202497.

It is an arithmetic number, because the mean of its divisors is an integer number (21303744).

Almost surely, 2^56809982 is an apocalyptic number.

56809982 is a deficient number, since it is larger than the sum of its proper divisors (28404994).

56809982 is a wasteful number, since it uses less digits than its factorization.

56809982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28404993.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 56809982 is about 7537.2396804135. The cubic root of 56809982 is about 384.4219852846.

The spelling of 56809982 in words is "fifty-six million, eight hundred nine thousand, nine hundred eighty-two".