522001398 has 8 divisors (see below), whose sum is σ = 1044002808. Its totient is φ = 174000464.

The previous prime is 522001393. The next prime is 522001429. The reversal of 522001398 is 893100225.

It is a happy number.

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

522001398 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522001391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43500111 + ... + 43500122.

It is an arithmetic number, because the mean of its divisors is an integer number (130500351).

Almost surely, 2^522001398 is an apocalyptic number.

522001398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

522001398 is a wasteful number, since it uses less digits than its factorization.

522001398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87000238.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 522001398 is about 22847.3499119701. The cubic root of 522001398 is about 805.1755069152.

The spelling of 522001398 in words is "five hundred twenty-two million, one thousand, three hundred ninety-eight".