522648631 has 4 divisors (see below), whose sum is σ = 522937152. Its totient is φ = 522360112.

The previous prime is 522648589. The next prime is 522648647. The reversal of 522648631 is 136846225.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-522648631 is a prime.

It is a super-2 number, since 2×522648631² = 546323182972348322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522648661) 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, 141526 + ... + 145171.

It is an arithmetic number, because the mean of its divisors is an integer number (130734288).

Almost surely, 2^522648631 is an apocalyptic number.

522648631 is a deficient number, since it is larger than the sum of its proper divisors (288521).

522648631 is a wasteful number, since it uses less digits than its factorization.

522648631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288520.

The product of its digits is 69120, while the sum is 37.

The square root of 522648631 is about 22861.5098145332. The cubic root of 522648631 is about 805.5081502902.

The spelling of 522648631 in words is "five hundred twenty-two million, six hundred forty-eight thousand, six hundred thirty-one".