485935581 has 4 divisors (see below), whose sum is σ = 647914112. Its totient is φ = 323957052.

The previous prime is 485935553. The next prime is 485935589. The reversal of 485935581 is 185539584.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 485935581 - 2⁹ = 485935069 is a prime.

It is a super-2 number, since 2×485935581² = 472266777763615122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 485935581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (485935589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80989261 + ... + 80989266.

It is an arithmetic number, because the mean of its divisors is an integer number (161978528).

Almost surely, 2^485935581 is an apocalyptic number.

It is an amenable number.

485935581 is a deficient number, since it is larger than the sum of its proper divisors (161978531).

485935581 is a wasteful number, since it uses less digits than its factorization.

485935581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161978530.

The product of its digits is 864000, while the sum is 48.

The square root of 485935581 is about 22043.9465840398. The cubic root of 485935581 is about 786.1876789623.

The spelling of 485935581 in words is "four hundred eighty-five million, nine hundred thirty-five thousand, five hundred eighty-one".