522252440 has 16 divisors (see below), whose sum is σ = 1175068080. Its totient is φ = 208900960.

The previous prime is 522252433. The next prime is 522252457. The reversal of 522252440 is 44252225.

It is a super-2 number, since 2×522252440² = 545495222171907200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6528116 + ... + 6528195.

It is an arithmetic number, because the mean of its divisors is an integer number (73441755).

Almost surely, 2^522252440 is an apocalyptic number.

It is an amenable number.

522252440 is an abundant number, since it is smaller than the sum of its proper divisors (652815640).

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

522252440 is a wasteful number, since it uses less digits than its factorization.

522252440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13056322 (or 13056318 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 522252440 is about 22852.8431491576. The cubic root of 522252440 is about 805.3045617898.

The spelling of 522252440 in words is "five hundred twenty-two million, two hundred fifty-two thousand, four hundred forty".