57544393 has 2 divisors, whose sum is σ = 57544394. Its totient is φ = 57544392.

The previous prime is 57544351. The next prime is 57544429. The reversal of 57544393 is 39344575.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36869184 + 20675209 = 6072^2 + 4547^2 .

It is a cyclic number.

It is not a de Polignac number, because 57544393 - 2⁹ = 57543881 is a prime.

It is a super-3 number, since 3×57544393³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (57544313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28772196 + 28772197.

It is an arithmetic number, because the mean of its divisors is an integer number (28772197).

Almost surely, 2^57544393 is an apocalyptic number.

It is an amenable number.

57544393 is a deficient number, since it is larger than the sum of its proper divisors (1).

57544393 is an equidigital number, since it uses as much as digits as its factorization.

57544393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 40.

The square root of 57544393 is about 7585.8020670197. The cubic root of 57544393 is about 386.0714361241.

The spelling of 57544393 in words is "fifty-seven million, five hundred forty-four thousand, three hundred ninety-three".