1559797 has 2 divisors, whose sum is σ = 1559798. Its totient is φ = 1559796.

The previous prime is 1559777. The next prime is 1559807. The reversal of 1559797 is 7979551.

1559797 is nontrivially palindromic in base 4.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1274641 + 285156 = 1129^2 + 534^2 .

It is a cyclic number.

It is not a de Polignac number, because 1559797 - 2⁷ = 1559669 is a prime.

1559797 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1559777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 779898 + 779899.

It is an arithmetic number, because the mean of its divisors is an integer number (779899).

2^1559797 is an apocalyptic number.

It is an amenable number.

1559797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1559797 is an equidigital number, since it uses as much as digits as its factorization.

1559797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 99225, while the sum is 43.

The square root of 1559797 is about 1248.9183319977. The cubic root of 1559797 is about 115.9727690738.

The spelling of 1559797 in words is "one million, five hundred fifty-nine thousand, seven hundred ninety-seven".