57148393 has 2 divisors, whose sum is σ = 57148394. Its totient is φ = 57148392.

The previous prime is 57148369. The next prime is 57148451. The reversal of 57148393 is 39384175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32228329 + 24920064 = 5677^2 + 4992^2 .

It is a cyclic number.

It is not a de Polignac number, because 57148393 - 2⁵ = 57148361 is a prime.

It is not a weakly prime, because it can be changed into another prime (57148303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28574196 + 28574197.

It is an arithmetic number, because the mean of its divisors is an integer number (28574197).

Almost surely, 2^57148393 is an apocalyptic number.

It is an amenable number.

57148393 is a deficient number, since it is larger than the sum of its proper divisors (1).

57148393 is an equidigital number, since it uses as much as digits as its factorization.

57148393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 57148393 is about 7559.6556138491. The cubic root of 57148393 is about 385.1837948552.

The spelling of 57148393 in words is "fifty-seven million, one hundred forty-eight thousand, three hundred ninety-three".