501211612 has 48 divisors (see below), whose sum is σ = 1036772352. Its totient is φ = 209422080.

The previous prime is 501211603. The next prime is 501211631. The reversal of 501211612 is 216112105.

It is a self number, because there is not a number n which added to its sum of digits gives 501211612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24373 + ... + 39955.

It is an arithmetic number, because the mean of its divisors is an integer number (21599424).

Almost surely, 2^501211612 is an apocalyptic number.

It is an amenable number.

501211612 is an abundant number, since it is smaller than the sum of its proper divisors (535560740).

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

501211612 is a wasteful number, since it uses less digits than its factorization.

501211612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15658 (or 15656 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 501211612 is about 22387.7558500177. The cubic root of 501211612 is about 794.3411135545.

Adding to 501211612 its reverse (216112105), we get a palindrome (717323717).

The spelling of 501211612 in words is "five hundred one million, two hundred eleven thousand, six hundred twelve".