57981193 has 4 divisors (see below), whose sum is σ = 58001940. Its totient is φ = 57960448.

The previous prime is 57981167. The next prime is 57981211. The reversal of 57981193 is 39118975.

57981193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41113744 + 16867449 = 6412^2 + 4107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57981193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57981163) 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 3 ways as a sum of consecutive naturals, for example, 5380 + ... + 12037.

It is an arithmetic number, because the mean of its divisors is an integer number (14500485).

Almost surely, 2^57981193 is an apocalyptic number.

It is an amenable number.

57981193 is a deficient number, since it is larger than the sum of its proper divisors (20747).

57981193 is a wasteful number, since it uses less digits than its factorization.

57981193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20746.

The product of its digits is 68040, while the sum is 43.

The square root of 57981193 is about 7614.5382657125. The cubic root of 57981193 is about 387.0458207024.

The spelling of 57981193 in words is "fifty-seven million, nine hundred eighty-one thousand, one hundred ninety-three".