56071983 has 32 divisors (see below), whose sum is σ = 88208640. Its totient is φ = 31311360.

The previous prime is 56071979. The next prime is 56071991. The reversal of 56071983 is 38917065.

It is not a de Polignac number, because 56071983 - 2² = 56071979 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56071903) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 21991 + ... + 24407.

It is an arithmetic number, because the mean of its divisors is an integer number (2756520).

Almost surely, 2^56071983 is an apocalyptic number.

56071983 is a deficient number, since it is larger than the sum of its proper divisors (32136657).

56071983 is a wasteful number, since it uses less digits than its factorization.

56071983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 56071983 is about 7488.1227954675. The cubic root of 56071983 is about 382.7500931827.

The spelling of 56071983 in words is "fifty-six million, seventy-one thousand, nine hundred eighty-three".