1585161 has 6 divisors (see below), whose sum is σ = 2289690. Its totient is φ = 1056768.

The previous prime is 1585147. The next prime is 1585201. The reversal of 1585161 is 1615851.

It can be written as a sum of positive squares in only one way, i.e., 1440000 + 145161 = 1200^2 + 381^2 .

It is not a de Polignac number, because 1585161 - 2⁷ = 1585033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1585261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 88056 + ... + 88073.

It is an arithmetic number, because the mean of its divisors is an integer number (381615).

2^1585161 is an apocalyptic number.

It is an amenable number.

1585161 is a deficient number, since it is larger than the sum of its proper divisors (704529).

1585161 is a wasteful number, since it uses less digits than its factorization.

1585161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176135 (or 176132 counting only the distinct ones).

The product of its digits is 1200, while the sum is 27.

The square root of 1585161 is about 1259.0317708462. The cubic root of 1585161 is about 116.5980067662.

The spelling of 1585161 in words is "one million, five hundred eighty-five thousand, one hundred sixty-one".