522252009 has 16 divisors (see below), whose sum is σ = 798666240. Its totient is φ = 336936240.

The previous prime is 522251999. The next prime is 522252041. The reversal of 522252009 is 900252225.

It is not a de Polignac number, because 522252009 - 2⁸ = 522251753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (522262009) 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 15 ways as a sum of consecutive naturals, for example, 311142 + ... + 312815.

It is an arithmetic number, because the mean of its divisors is an integer number (49916640).

Almost surely, 2^522252009 is an apocalyptic number.

It is an amenable number.

522252009 is a deficient number, since it is larger than the sum of its proper divisors (276414231).

522252009 is a wasteful number, since it uses less digits than its factorization.

522252009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623997 (or 623991 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 522252009 is about 22852.8337192568. The cubic root of 522252009 is about 805.3043402581.

The spelling of 522252009 in words is "five hundred twenty-two million, two hundred fifty-two thousand, nine".