501533501200 has 120 divisors (see below), whose sum is σ = 1259958643200. Its totient is φ = 191488788480.

The previous prime is 501533501171. The next prime is 501533501207. The reversal of 501533501200 is 2105335105.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (501533501207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4349896 + ... + 4463704.

It is an arithmetic number, because the mean of its divisors is an integer number (10499655360).

Almost surely, 2^501533501200 is an apocalyptic number.

501533501200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 501533501200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (629979321600).

501533501200 is an abundant number, since it is smaller than the sum of its proper divisors (758425142000).

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

501533501200 is a wasteful number, since it uses less digits than its factorization.

501533501200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114329 (or 114318 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 25.

Adding to 501533501200 its reverse (2105335105), we get a palindrome (503638836305).

The spelling of 501533501200 in words is "five hundred one billion, five hundred thirty-three million, five hundred one thousand, two hundred".