522821898 has 32 divisors (see below), whose sum is σ = 1222977600. Its totient is φ = 165101328.

The previous prime is 522821863. The next prime is 522821899. The reversal of 522821898 is 898128225.

It is not an unprimeable number, because it can be changed into a prime (522821899) 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, 253761 + ... + 255812.

It is an arithmetic number, because the mean of its divisors is an integer number (38218050).

Almost surely, 2^522821898 is an apocalyptic number.

522821898 is an abundant number, since it is smaller than the sum of its proper divisors (700155702).

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

522821898 is a wasteful number, since it uses less digits than its factorization.

522821898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509603 (or 509597 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The square root of 522821898 is about 22865.2989921409. The cubic root of 522821898 is about 805.5971537189.

The spelling of 522821898 in words is "five hundred twenty-two million, eight hundred twenty-one thousand, eight hundred ninety-eight".