1597961 has 2 divisors, whose sum is σ = 1597962. Its totient is φ = 1597960.

The previous prime is 1597951. The next prime is 1597969. The reversal of 1597961 is 1697951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1488400 + 109561 = 1220^2 + 331^2 .

It is a cyclic number.

It is not a de Polignac number, because 1597961 - 2¹⁴ = 1581577 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1597969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 798980 + 798981.

It is an arithmetic number, because the mean of its divisors is an integer number (798981).

2^1597961 is an apocalyptic number.

It is an amenable number.

1597961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1597961 is an equidigital number, since it uses as much as digits as its factorization.

1597961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 38.

The square root of 1597961 is about 1264.1048216030. The cubic root of 1597961 is about 116.9110044735.

The spelling of 1597961 in words is "one million, five hundred ninety-seven thousand, nine hundred sixty-one".