56683993 has 4 divisors (see below), whose sum is σ = 56805840. Its totient is φ = 56562148.

The previous prime is 56683961. The next prime is 56683997. The reversal of 56683993 is 39938665.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56683993 - 2⁵ = 56683961 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (56683997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60223 + ... + 61156.

It is an arithmetic number, because the mean of its divisors is an integer number (14201460).

Almost surely, 2^56683993 is an apocalyptic number.

It is an amenable number.

56683993 is a deficient number, since it is larger than the sum of its proper divisors (121847).

56683993 is a wasteful number, since it uses less digits than its factorization.

56683993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121846.

The product of its digits is 1049760, while the sum is 49.

The square root of 56683993 is about 7528.8772735382. The cubic root of 56683993 is about 384.1375940113.

The spelling of 56683993 in words is "fifty-six million, six hundred eighty-three thousand, nine hundred ninety-three".