57287143 has 2 divisors, whose sum is σ = 57287144. Its totient is φ = 57287142.

The previous prime is 57287129. The next prime is 57287159. The reversal of 57287143 is 34178275.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57287143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57287123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28643571 + 28643572.

It is an arithmetic number, because the mean of its divisors is an integer number (28643572).

Almost surely, 2^57287143 is an apocalyptic number.

57287143 is a deficient number, since it is larger than the sum of its proper divisors (1).

57287143 is an equidigital number, since it uses as much as digits as its factorization.

57287143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 37.

The square root of 57287143 is about 7568.8270557597. The cubic root of 57287143 is about 385.4952708492.

The spelling of 57287143 in words is "fifty-seven million, two hundred eighty-seven thousand, one hundred forty-three".