651501552 has 80 divisors (see below), whose sum is σ = 1820695968. Its totient is φ = 199557120.

The previous prime is 651501547. The next prime is 651501553. The reversal of 651501552 is 255105156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651501553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143152 + ... + 147632.

Almost surely, 2^651501552 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 651501552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (910347984).

651501552 is an abundant number, since it is smaller than the sum of its proper divisors (1169194416).

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

651501552 is a wasteful number, since it uses less digits than its factorization.

651501552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738 (or 4732 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 651501552 is about 25524.5284383473. The cubic root of 651501552 is about 866.9056195812.

The spelling of 651501552 in words is "six hundred fifty-one million, five hundred one thousand, five hundred fifty-two".