651350532 has 72 divisors (see below), whose sum is σ = 1783778976. Its totient is φ = 184434432.

The previous prime is 651350509. The next prime is 651350543. The reversal of 651350532 is 235053156.

It is a self number, because there is not a number n which added to its sum of digits gives 651350532.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61543 + ... + 71345.

It is an arithmetic number, because the mean of its divisors is an integer number (24774708).

Almost surely, 2^651350532 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 651350532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (891889488).

651350532 is an abundant number, since it is smaller than the sum of its proper divisors (1132428444).

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

651350532 is a wasteful number, since it uses less digits than its factorization.

651350532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9937 (or 9928 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 651350532 is about 25521.5699360365. The cubic root of 651350532 is about 866.8386306367.

The spelling of 651350532 in words is "six hundred fifty-one million, three hundred fifty thousand, five hundred thirty-two".