57143297 has 2 divisors, whose sum is σ = 57143298. Its totient is φ = 57143296.

The previous prime is 57143291. The next prime is 57143321. The reversal of 57143297 is 79234175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56911936 + 231361 = 7544^2 + 481^2 .

It is a cyclic number.

It is not a de Polignac number, because 57143297 - 2⁸ = 57143041 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57143297.

It is not a weakly prime, because it can be changed into another prime (57143291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28571648 + 28571649.

It is an arithmetic number, because the mean of its divisors is an integer number (28571649).

Almost surely, 2^57143297 is an apocalyptic number.

It is an amenable number.

57143297 is a deficient number, since it is larger than the sum of its proper divisors (1).

57143297 is an equidigital number, since it uses as much as digits as its factorization.

57143297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 57143297 is about 7559.3185539439. The cubic root of 57143297 is about 385.1723453938.

The spelling of 57143297 in words is "fifty-seven million, one hundred forty-three thousand, two hundred ninety-seven".