652651561 has 4 divisors (see below), whose sum is σ = 658639300. Its totient is φ = 646663824.

The previous prime is 652651553. The next prime is 652651591. The reversal of 652651561 is 165156256.

652651561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 583512336 + 69139225 = 24156^2 + 8315^2 .

It is a cyclic number.

It is not a de Polignac number, because 652651561 - 2³ = 652651553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 652651561.

It is not an unprimeable number, because it can be changed into a prime (652651591) 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, 2993706 + ... + 2993923.

It is an arithmetic number, because the mean of its divisors is an integer number (164659825).

Almost surely, 2^652651561 is an apocalyptic number.

It is an amenable number.

652651561 is a deficient number, since it is larger than the sum of its proper divisors (5987739).

652651561 is a wasteful number, since it uses less digits than its factorization.

652651561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5987738.

The product of its digits is 54000, while the sum is 37.

The square root of 652651561 is about 25547.0460327608. The cubic root of 652651561 is about 867.4153974639.

The spelling of 652651561 in words is "six hundred fifty-two million, six hundred fifty-one thousand, five hundred sixty-one".