57438993 has 8 divisors (see below), whose sum is σ = 76684608. Its totient is φ = 38243024.

The previous prime is 57438989. The next prime is 57439007. The reversal of 57438993 is 39983475.

57438993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 57438993 - 2² = 57438989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57438973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9621 + ... + 14402.

It is an arithmetic number, because the mean of its divisors is an integer number (9585576).

Almost surely, 2^57438993 is an apocalyptic number.

It is an amenable number.

57438993 is a deficient number, since it is larger than the sum of its proper divisors (19245615).

57438993 is a wasteful number, since it uses less digits than its factorization.

57438993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24823.

The product of its digits is 816480, while the sum is 48.

The square root of 57438993 is about 7578.8516940233. The cubic root of 57438993 is about 385.8355788046.

The spelling of 57438993 in words is "fifty-seven million, four hundred thirty-eight thousand, nine hundred ninety-three".