487565831 has 12 divisors (see below), whose sum is σ = 519436632. Its totient is φ = 457554048.

The previous prime is 487565807. The next prime is 487565839. The reversal of 487565831 is 138565784.

It is a de Polignac number, because none of the positive numbers 2^k-487565831 is a prime.

It is a super-2 number, since 2×487565831² = 475440879117441122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487565839) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105536 + ... + 110058.

It is an arithmetic number, because the mean of its divisors is an integer number (43286386).

Almost surely, 2^487565831 is an apocalyptic number.

487565831 is a deficient number, since it is larger than the sum of its proper divisors (31870801).

487565831 is a wasteful number, since it uses less digits than its factorization.

487565831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4930 (or 4913 counting only the distinct ones).

The product of its digits is 806400, while the sum is 47.

The square root of 487565831 is about 22080.8928940838. The cubic root of 487565831 is about 787.0658830474.

Subtracting from 487565831 its sum of digits (47), we obtain a palindrome (487565784).

The spelling of 487565831 in words is "four hundred eighty-seven million, five hundred sixty-five thousand, eight hundred thirty-one".