521234023244 has 24 divisors (see below), whose sum is σ = 1004212347600. Its totient is φ = 234750934080.

The previous prime is 521234023243. The next prime is 521234023267. The reversal of 521234023244 is 442320432125.

It is a self number, because there is not a number n which added to its sum of digits gives 521234023244.

It is not an unprimeable number, because it can be changed into a prime (521234023243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54335699 + ... + 54345290.

It is an arithmetic number, because the mean of its divisors is an integer number (41842181150).

Almost surely, 2^521234023244 is an apocalyptic number.

It is an amenable number.

521234023244 is a deficient number, since it is larger than the sum of its proper divisors (482978324356).

521234023244 is a wasteful number, since it uses less digits than its factorization.

521234023244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108681113 (or 108681111 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 521234023244 its reverse (442320432125), we get a palindrome (963554455369).

The spelling of 521234023244 in words is "five hundred twenty-one billion, two hundred thirty-four million, twenty-three thousand, two hundred forty-four".