1595861 has 2 divisors, whose sum is σ = 1595862. Its totient is φ = 1595860.

The previous prime is 1595857. The next prime is 1595863. The reversal of 1595861 is 1685951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1062961 + 532900 = 1031^2 + 730^2 .

It is an emirp because it is prime and its reverse (1685951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1595861 - 2² = 1595857 is a prime.

Together with 1595863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1595863) 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, 797930 + 797931.

It is an arithmetic number, because the mean of its divisors is an integer number (797931).

2^1595861 is an apocalyptic number.

It is an amenable number.

1595861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1595861 is an equidigital number, since it uses as much as digits as its factorization.

1595861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 35.

The square root of 1595861 is about 1263.2739212063. The cubic root of 1595861 is about 116.8597681924.

The spelling of 1595861 in words is "one million, five hundred ninety-five thousand, eight hundred sixty-one".