520354121052 has 48 divisors (see below), whose sum is σ = 1238814168480. Its totient is φ = 169938532608.

The previous prime is 520354121051. The next prime is 520354121117. The reversal of 520354121052 is 250121453025.

It is a super-2 number, since 2×520354121052² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520354121051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126063 + ... + 1027910.

It is an arithmetic number, because the mean of its divisors is an integer number (25808628510).

Almost surely, 2^520354121052 is an apocalyptic number.

It is an amenable number.

520354121052 is an abundant number, since it is smaller than the sum of its proper divisors (718460047428).

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

520354121052 is a wasteful number, since it uses less digits than its factorization.

520354121052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154742 (or 1154740 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 520354121052 its reverse (250121453025), we get a palindrome (770475574077).

The spelling of 520354121052 in words is "five hundred twenty billion, three hundred fifty-four million, one hundred twenty-one thousand, fifty-two".