56993 has 2 divisors, whose sum is σ = 56994. Its totient is φ = 56992.

The previous prime is 56989. The next prime is 56999. The reversal of 56993 is 39965.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54289 + 2704 = 233^2 + 52^2 .

It is a cyclic number.

It is not a de Polignac number, because 56993 - 2² = 56989 is a prime.

It is a Chen prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (56999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28496 + 28497.

It is an arithmetic number, because the mean of its divisors is an integer number (28497).

2⁵⁶⁹⁹³ is an apocalyptic number.

It is an amenable number.

56993 is a deficient number, since it is larger than the sum of its proper divisors (1).

56993 is an equidigital number, since it uses as much as digits as its factorization.

56993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7290, while the sum is 32.

The square root of 56993 is about 238.7320673894. The cubic root of 56993 is about 38.4834358385.

The spelling of 56993 in words is "fifty-six thousand, nine hundred ninety-three".