63857141 has 2 divisors, whose sum is σ = 63857142. Its totient is φ = 63857140.

The previous prime is 63857099. The next prime is 63857147. The reversal of 63857141 is 14175836.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32160241 + 31696900 = 5671^2 + 5630^2 .

It is a cyclic number.

It is not a de Polignac number, because 63857141 - 2¹⁴ = 63840757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63857147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31928570 + 31928571.

It is an arithmetic number, because the mean of its divisors is an integer number (31928571).

Almost surely, 2^63857141 is an apocalyptic number.

It is an amenable number.

63857141 is a deficient number, since it is larger than the sum of its proper divisors (1).

63857141 is an equidigital number, since it uses as much as digits as its factorization.

63857141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 63857141 is about 7991.0663243400. The cubic root of 63857141 is about 399.7021553598.

The spelling of 63857141 in words is "sixty-three million, eight hundred fifty-seven thousand, one hundred forty-one".