522640461 has 8 divisors (see below), whose sum is σ = 796404544. Its totient is φ = 298651680.

The previous prime is 522640453. The next prime is 522640471. The reversal of 522640461 is 164046225.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 522640461 - 2³ = 522640453 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522640411) 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 7 ways as a sum of consecutive naturals, for example, 12443800 + ... + 12443841.

It is an arithmetic number, because the mean of its divisors is an integer number (99550568).

Almost surely, 2^522640461 is an apocalyptic number.

It is an amenable number.

522640461 is a deficient number, since it is larger than the sum of its proper divisors (273764083).

522640461 is a wasteful number, since it uses less digits than its factorization.

522640461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24887651.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 522640461 is about 22861.3311292234. The cubic root of 522640461 is about 805.5039530562.

Adding to 522640461 its reverse (164046225), we get a palindrome (686686686).

The spelling of 522640461 in words is "five hundred twenty-two million, six hundred forty thousand, four hundred sixty-one".