651012252 has 96 divisors (see below), whose sum is σ = 1696391424. Its totient is φ = 192652800.

The previous prime is 651012251. The next prime is 651012269. The reversal of 651012252 is 252210156.

It is a happy number.

651012252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×651012252² = 847633904508223008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651012251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1875943 + ... + 1876289.

It is an arithmetic number, because the mean of its divisors is an integer number (17670744).

Almost surely, 2^651012252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651012252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (848195712).

651012252 is an abundant number, since it is smaller than the sum of its proper divisors (1045379172).

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

651012252 is a wasteful number, since it uses less digits than its factorization.

651012252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 651012252 is about 25514.9417400863. The cubic root of 651012252 is about 866.6885399476.

The spelling of 651012252 in words is "six hundred fifty-one million, twelve thousand, two hundred fifty-two".