523503021552 has 160 divisors (see below), whose sum is σ = 1627286085120. Its totient is φ = 141668766720.

The previous prime is 523503021523. The next prime is 523503021563. The reversal of 523503021552 is 255120305325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56768302 + ... + 56777522.

It is an arithmetic number, because the mean of its divisors is an integer number (10170538032).

Almost surely, 2^523503021552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523503021552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (813643042560).

523503021552 is an abundant number, since it is smaller than the sum of its proper divisors (1103783063568).

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

523503021552 is a wasteful number, since it uses less digits than its factorization.

523503021552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18151 (or 18145 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 33.

Adding to 523503021552 its reverse (255120305325), we get a palindrome (778623326877).

The spelling of 523503021552 in words is "five hundred twenty-three billion, five hundred three million, twenty-one thousand, five hundred fifty-two".