651043212 has 48 divisors (see below), whose sum is σ = 1538151552. Its totient is φ = 214306560.

The previous prime is 651043207. The next prime is 651043213. The reversal of 651043212 is 212340156.

It is not an unprimeable number, because it can be changed into a prime (651043213) 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 15 ways as a sum of consecutive naturals, for example, 555387 + ... + 556557.

It is an arithmetic number, because the mean of its divisors is an integer number (32044824).

Almost surely, 2^651043212 is an apocalyptic number.

It is an amenable number.

651043212 is an abundant number, since it is smaller than the sum of its proper divisors (887108340).

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

651043212 is a wasteful number, since it uses less digits than its factorization.

651043212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718 (or 1716 counting only the distinct ones).

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

The square root of 651043212 is about 25515.5484361987. The cubic root of 651043212 is about 866.7022786813.

Adding to 651043212 its reverse (212340156), we get a palindrome (863383368).

The spelling of 651043212 in words is "six hundred fifty-one million, forty-three thousand, two hundred twelve".