522287487 has 8 divisors (see below), whose sum is σ = 773759280. Its totient is φ = 348191640.

The previous prime is 522287471. The next prime is 522287497. The reversal of 522287487 is 784782225.

522287487 is a `hidden beast` number, since 522 + 2 + 87 + 48 + 7 = 666.

It is not a de Polignac number, because 522287487 - 2⁴ = 522287471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522287497) 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 7 ways as a sum of consecutive naturals, for example, 9671964 + ... + 9672017.

It is an arithmetic number, because the mean of its divisors is an integer number (96719910).

Almost surely, 2^522287487 is an apocalyptic number.

522287487 is a deficient number, since it is larger than the sum of its proper divisors (251471793).

522287487 is a wasteful number, since it uses less digits than its factorization.

522287487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19343990 (or 19343984 counting only the distinct ones).

The product of its digits is 501760, while the sum is 45.

The square root of 522287487 is about 22853.6099336626. The cubic root of 522287487 is about 805.3225753502.

The spelling of 522287487 in words is "five hundred twenty-two million, two hundred eighty-seven thousand, four hundred eighty-seven".