1648057 has 2 divisors, whose sum is σ = 1648058. Its totient is φ = 1648056.

The previous prime is 1648039. The next prime is 1648063. The reversal of 1648057 is 7508461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1628176 + 19881 = 1276^2 + 141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1648057 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1648067) 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, 824028 + 824029.

It is an arithmetic number, because the mean of its divisors is an integer number (824029).

2^1648057 is an apocalyptic number.

It is an amenable number.

1648057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648057 is an equidigital number, since it uses as much as digits as its factorization.

1648057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 1648057 is about 1283.7667233575. The cubic root of 1648057 is about 118.1201734635.

The spelling of 1648057 in words is "one million, six hundred forty-eight thousand, fifty-seven".