651495552 has 64 divisors (see below), whose sum is σ = 1751470560. Its totient is φ = 214538240.

The previous prime is 651495517. The next prime is 651495569. The reversal of 651495552 is 255594156.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21652 + ... + 42092.

Almost surely, 2^651495552 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 651495552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (875735280).

651495552 is an abundant number, since it is smaller than the sum of its proper divisors (1099975008).

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

651495552 is a wasteful number, since it uses less digits than its factorization.

651495552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20541 (or 20529 counting only the distinct ones).

The product of its digits is 270000, while the sum is 42.

The square root of 651495552 is about 25524.4109040738. The cubic root of 651495552 is about 866.9029583188.

The spelling of 651495552 in words is "six hundred fifty-one million, four hundred ninety-five thousand, five hundred fifty-two".