1585961 has 4 divisors (see below), whose sum is σ = 1707972. Its totient is φ = 1463952.

The previous prime is 1585937. The next prime is 1585963. The reversal of 1585961 is 1695851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1695851 = 97 ⋅17483.

It can be written as a sum of positive squares in 2 ways, for example, as 1038361 + 547600 = 1019^2 + 740^2 .

It is a cyclic number.

It is not a de Polignac number, because 1585961 - 2⁶ = 1585897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1585963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60986 + ... + 61011.

It is an arithmetic number, because the mean of its divisors is an integer number (426993).

2^1585961 is an apocalyptic number.

It is an amenable number.

1585961 is a deficient number, since it is larger than the sum of its proper divisors (122011).

1585961 is a wasteful number, since it uses less digits than its factorization.

1585961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122010.

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

The square root of 1585961 is about 1259.3494352244. The cubic root of 1585961 is about 116.6176183846.

The spelling of 1585961 in words is "one million, five hundred eighty-five thousand, nine hundred sixty-one".