1285057 has 2 divisors, whose sum is σ = 1285058. Its totient is φ = 1285056.

The previous prime is 1285051. The next prime is 1285061. The reversal of 1285057 is 7505821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1245456 + 39601 = 1116^2 + 199^2 .

It is an emirp because it is prime and its reverse (7505821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1285057 - 2³ = 1285049 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1285051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642528 + 642529.

It is an arithmetic number, because the mean of its divisors is an integer number (642529).

2^1285057 is an apocalyptic number.

It is an amenable number.

1285057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285057 is an equidigital number, since it uses as much as digits as its factorization.

1285057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 1285057 is about 1133.6035462189. The cubic root of 1285057 is about 108.7195043748.

The spelling of 1285057 in words is "one million, two hundred eighty-five thousand, fifty-seven".