651551052 has 12 divisors (see below), whose sum is σ = 1520285816. Its totient is φ = 217183680.

The previous prime is 651551023. The next prime is 651551053. The reversal of 651551052 is 250155156.

651551052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (651551053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27147949 + ... + 27147972.

Almost surely, 2^651551052 is an apocalyptic number.

It is an amenable number.

651551052 is an abundant number, since it is smaller than the sum of its proper divisors (868734764).

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

651551052 is a wasteful number, since it uses less digits than its factorization.

651551052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54295928 (or 54295926 counting only the distinct ones).

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

The square root of 651551052 is about 25525.4980754539. The cubic root of 651551052 is about 866.9275743723.

The spelling of 651551052 in words is "six hundred fifty-one million, five hundred fifty-one thousand, fifty-two".