522340521 has 16 divisors (see below), whose sum is σ = 738347904. Its totient is φ = 327331584.

The previous prime is 522340517. The next prime is 522340523. The reversal of 522340521 is 125043225.

It is not a de Polignac number, because 522340521 - 2² = 522340517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 522340491 and 522340500.

It is not an unprimeable number, because it can be changed into a prime (522340523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37500 + ... + 49506.

It is an arithmetic number, because the mean of its divisors is an integer number (46146744).

Almost surely, 2^522340521 is an apocalyptic number.

522340521 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

522340521 is a deficient number, since it is larger than the sum of its proper divisors (216007383).

522340521 is a wasteful number, since it uses less digits than its factorization.

522340521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12880.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 522340521 is about 22854.7702023013. The cubic root of 522340521 is about 805.3498323897.

Adding to 522340521 its reverse (125043225), we get a palindrome (647383746).

The spelling of 522340521 in words is "five hundred twenty-two million, three hundred forty thousand, five hundred twenty-one".