501643212 has 48 divisors (see below), whose sum is σ = 1340021760. Its totient is φ = 143079552.

The previous prime is 501643211. The next prime is 501643213. The reversal of 501643212 is 212346105.

It is an interprime number because it is at equal distance from previous prime (501643211) and next prime (501643213).

It is not an unprimeable number, because it can be changed into a prime (501643211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46989 + ... + 56667.

It is an arithmetic number, because the mean of its divisors is an integer number (27917120).

Almost surely, 2^501643212 is an apocalyptic number.

It is an amenable number.

501643212 is an abundant number, since it is smaller than the sum of its proper divisors (838378548).

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

501643212 is a wasteful number, since it uses less digits than its factorization.

501643212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10310 (or 10308 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 501643212 is about 22397.3929732904. The cubic root of 501643212 is about 794.5690540465.

Adding to 501643212 its reverse (212346105), we get a palindrome (713989317).

The spelling of 501643212 in words is "five hundred one million, six hundred forty-three thousand, two hundred twelve".