56039993 has 8 divisors (see below), whose sum is σ = 56918400. Its totient is φ = 55165968.

The previous prime is 56039969. The next prime is 56040011. The reversal of 56039993 is 39993065.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56039993 - 2¹² = 56035897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56039903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32255 + ... + 33947.

It is an arithmetic number, because the mean of its divisors is an integer number (7114800).

Almost surely, 2^56039993 is an apocalyptic number.

It is an amenable number.

56039993 is a deficient number, since it is larger than the sum of its proper divisors (878407).

56039993 is a wasteful number, since it uses less digits than its factorization.

56039993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191.

The product of its (nonzero) digits is 196830, while the sum is 44.

The square root of 56039993 is about 7485.9864413449. The cubic root of 56039993 is about 382.6772909021.

The spelling of 56039993 in words is "fifty-six million, thirty-nine thousand, nine hundred ninety-three".