501987212 has 12 divisors (see below), whose sum is σ = 878783640. Its totient is φ = 250906176.

The previous prime is 501987197. The next prime is 501987217. The reversal of 501987212 is 212789105.

It is a super-2 number, since 2×501987212² = 503982322023065888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (501987217) 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 3 ways as a sum of consecutive naturals, for example, 7958 + ... + 32669.

It is an arithmetic number, because the mean of its divisors is an integer number (73231970).

Almost surely, 2^501987212 is an apocalyptic number.

It is an amenable number.

501987212 is a deficient number, since it is larger than the sum of its proper divisors (376796428).

501987212 is a wasteful number, since it uses less digits than its factorization.

501987212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43720 (or 43718 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 501987212 is about 22405.0711224044. The cubic root of 501987212 is about 794.7506368216.

The spelling of 501987212 in words is "five hundred one million, nine hundred eighty-seven thousand, two hundred twelve".