901585 has 4 divisors (see below), whose sum is σ = 1081908. Its totient is φ = 721264.

The previous prime is 901567. The next prime is 901591. The reversal of 901585 is 585109.

901585 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 156816 + 744769 = 396^2 + 863^2 .

It is a cyclic number.

It is not a de Polignac number, because 901585 - 2⁷ = 901457 is a prime.

It is a Duffinian number.

901585 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90154 + ... + 90163.

It is an arithmetic number, because the mean of its divisors is an integer number (270477).

2⁹⁰¹⁵⁸⁵ is an apocalyptic number.

It is an amenable number.

901585 is a deficient number, since it is larger than the sum of its proper divisors (180323).

901585 is a wasteful number, since it uses less digits than its factorization.

901585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180322.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 901585 is about 949.5182989285. The cubic root of 901585 is about 96.6055830239.

The spelling of 901585 in words is "nine hundred one thousand, five hundred eighty-five".