56961983 has 16 divisors (see below), whose sum is σ = 63016800. Its totient is φ = 51166080.

The previous prime is 56961941. The next prime is 56961991. The reversal of 56961983 is 38916965.

It is a cyclic number.

It is not a de Polignac number, because 56961983 - 2¹⁴ = 56945599 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56961083) 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 15 ways as a sum of consecutive naturals, for example, 86108 + ... + 86766.

It is an arithmetic number, because the mean of its divisors is an integer number (3938550).

Almost surely, 2^56961983 is an apocalyptic number.

56961983 is a deficient number, since it is larger than the sum of its proper divisors (6054817).

56961983 is a wasteful number, since it uses less digits than its factorization.

56961983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842.

The product of its digits is 349920, while the sum is 47.

The square root of 56961983 is about 7547.3162779892. The cubic root of 56961983 is about 384.7645335914.

The spelling of 56961983 in words is "fifty-six million, nine hundred sixty-one thousand, nine hundred eighty-three".