522403540 has 48 divisors (see below), whose sum is σ = 1163456784. Its totient is φ = 196352000.

The previous prime is 522403529. The next prime is 522403579. The reversal of 522403540 is 45304225.

It can be written as a sum of positive squares in 8 ways, for example, as 1285956 + 521117584 = 1134^2 + 22828^2 .

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 400890 + ... + 402190.

It is an arithmetic number, because the mean of its divisors is an integer number (24238683).

Almost surely, 2^522403540 is an apocalyptic number.

It is an amenable number.

522403540 is an abundant number, since it is smaller than the sum of its proper divisors (641053244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

522403540 is a wasteful number, since it uses less digits than its factorization.

522403540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508 (or 2506 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 522403540 is about 22856.1488444576. The cubic root of 522403540 is about 805.3822188618.

Adding to 522403540 its reverse (45304225), we get a palindrome (567707765).

The spelling of 522403540 in words is "five hundred twenty-two million, four hundred three thousand, five hundred forty".