485731657 has 4 divisors (see below), whose sum is σ = 485779216. Its totient is φ = 485684100.

The previous prime is 485731627. The next prime is 485731663. The reversal of 485731657 is 756137584.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 485731657 - 2¹⁹ = 485207369 is a prime.

It is a super-2 number, since 2×485731657² = 471870485223931298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (485731607) 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, 1503 + ... + 31204.

It is an arithmetic number, because the mean of its divisors is an integer number (121444804).

Almost surely, 2^485731657 is an apocalyptic number.

It is an amenable number.

485731657 is a deficient number, since it is larger than the sum of its proper divisors (47559).

485731657 is a wasteful number, since it uses less digits than its factorization.

485731657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47558.

The product of its digits is 705600, while the sum is 46.

The square root of 485731657 is about 22039.3207018728. The cubic root of 485731657 is about 786.0776884105.

The spelling of 485731657 in words is "four hundred eighty-five million, seven hundred thirty-one thousand, six hundred fifty-seven".