501222445 has 4 divisors (see below), whose sum is σ = 601466940. Its totient is φ = 400977952.

The previous prime is 501222443. The next prime is 501222473. The reversal of 501222445 is 544222105.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 194937444 + 306285001 = 13962^2 + 17501^2 .

It is a cyclic number.

It is not a de Polignac number, because 501222445 - 2¹ = 501222443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501222443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50122240 + ... + 50122249.

It is an arithmetic number, because the mean of its divisors is an integer number (150366735).

Almost surely, 2^501222445 is an apocalyptic number.

It is an amenable number.

501222445 is a deficient number, since it is larger than the sum of its proper divisors (100244495).

501222445 is a wasteful number, since it uses less digits than its factorization.

501222445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100244494.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 501222445 is about 22387.9977889940. The cubic root of 501222445 is about 794.3468363770.

The spelling of 501222445 in words is "five hundred one million, two hundred twenty-two thousand, four hundred forty-five".