57261143 has 2 divisors, whose sum is σ = 57261144. Its totient is φ = 57261142.

The previous prime is 57261121. The next prime is 57261161. The reversal of 57261143 is 34116275.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57261143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57261103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28630571 + 28630572.

It is an arithmetic number, because the mean of its divisors is an integer number (28630572).

Almost surely, 2^57261143 is an apocalyptic number.

57261143 is a deficient number, since it is larger than the sum of its proper divisors (1).

57261143 is an equidigital number, since it uses as much as digits as its factorization.

57261143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 57261143 is about 7567.1092895504. The cubic root of 57261143 is about 385.4369424983.

The spelling of 57261143 in words is "fifty-seven million, two hundred sixty-one thousand, one hundred forty-three".