1597081 has 2 divisors, whose sum is σ = 1597082. Its totient is φ = 1597080.

The previous prime is 1597069. The next prime is 1597091. The reversal of 1597081 is 1807951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 931225 + 665856 = 965^2 + 816^2 .

It is a cyclic number.

It is not a de Polignac number, because 1597081 - 2¹³ = 1588889 is a prime.

It is a super-2 number, since 2×1597081² = 5101335441122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1597091) 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, 798540 + 798541.

It is an arithmetic number, because the mean of its divisors is an integer number (798541).

2^1597081 is an apocalyptic number.

It is an amenable number.

1597081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1597081 is an equidigital number, since it uses as much as digits as its factorization.

1597081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 1597081 is about 1263.7567012681. The cubic root of 1597081 is about 116.8895394992.

The spelling of 1597081 in words is "one million, five hundred ninety-seven thousand, eighty-one".