485732509 has 4 divisors (see below), whose sum is σ = 485823580. Its totient is φ = 485641440.

The previous prime is 485732501. The next prime is 485732543. The reversal of 485732509 is 905237584.

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 260822500 + 224910009 = 16150^2 + 14997^2 .

It is a cyclic number.

It is not a de Polignac number, because 485732509 - 2³ = 485732501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (485732501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37002 + ... + 48379.

It is an arithmetic number, because the mean of its divisors is an integer number (121455895).

Almost surely, 2^485732509 is an apocalyptic number.

It is an amenable number.

485732509 is a deficient number, since it is larger than the sum of its proper divisors (91071).

485732509 is an equidigital number, since it uses as much as digits as its factorization.

485732509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91070.

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 485732509 is about 22039.3400309537. The cubic root of 485732509 is about 786.0781480181.

The spelling of 485732509 in words is "four hundred eighty-five million, seven hundred thirty-two thousand, five hundred nine".