501570225 has 168 divisors, whose sum is σ = 1053083640. Its totient is φ = 235146240.

The previous prime is 501570211. The next prime is 501570233. The reversal of 501570225 is 522075105.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 200165904 + 301404321 = 14148^2 + 17361^2 .

It is not a de Polignac number, because 501570225 - 2⁶ = 501570161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 167 ways as a sum of consecutive naturals, for example, 6870789 + ... + 6870861.

It is an arithmetic number, because the mean of its divisors is an integer number (6268355).

Almost surely, 2^501570225 is an apocalyptic number.

It is an amenable number.

501570225 is an abundant number, since it is smaller than the sum of its proper divisors (551513415).

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

501570225 is a wasteful number, since it uses less digits than its factorization.

501570225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 501570225 is about 22395.7635502789. The cubic root of 501570225 is about 794.5305166803.

The spelling of 501570225 in words is "five hundred one million, five hundred seventy thousand, two hundred twenty-five".