485617561 has 48 divisors (see below), whose sum is σ = 629838720. Its totient is φ = 368375040.

The previous prime is 485617537. The next prime is 485617567. The reversal of 485617561 is 165716584.

It is not a de Polignac number, because 485617561 - 2¹¹ = 485615513 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 (485617567) 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 47 ways as a sum of consecutive naturals, for example, 1187125 + ... + 1187533.

It is an arithmetic number, because the mean of its divisors is an integer number (13121640).

Almost surely, 2^485617561 is an apocalyptic number.

It is an amenable number.

485617561 is a deficient number, since it is larger than the sum of its proper divisors (144221159).

485617561 is a wasteful number, since it uses less digits than its factorization.

485617561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 475 counting only the distinct ones).

The product of its digits is 201600, while the sum is 43.

The square root of 485617561 is about 22036.7320853161. The cubic root of 485617561 is about 786.0161349842.

The spelling of 485617561 in words is "four hundred eighty-five million, six hundred seventeen thousand, five hundred sixty-one".