501325552 has 160 divisors (see below), whose sum is σ = 1279918080. Its totient is φ = 184826880.

The previous prime is 501325541. The next prime is 501325567. The reversal of 501325552 is 255523105.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 501325552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1308753 + ... + 1309135.

It is an arithmetic number, because the mean of its divisors is an integer number (7999488).

Almost surely, 2^501325552 is an apocalyptic number.

501325552 is a gapful number since it is divisible by the number (52) 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 501325552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (639959040).

501325552 is an abundant number, since it is smaller than the sum of its proper divisors (778592528).

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

501325552 is a wasteful number, since it uses less digits than its factorization.

501325552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 465 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 501325552 is about 22390.3003999500. The cubic root of 501325552 is about 794.4013012855.

Adding to 501325552 its reverse (255523105), we get a palindrome (756848657).

The spelling of 501325552 in words is "five hundred one million, three hundred twenty-five thousand, five hundred fifty-two".