3652471561 has 4 divisors (see below), whose sum is σ = 3702505492. Its totient is φ = 3602437632.

The previous prime is 3652471549. The next prime is 3652471579. The reversal of 3652471561 is 1651742563.

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 1484637961 + 2167833600 = 38531^2 + 46560^2 .

It is a cyclic number.

It is not a de Polignac number, because 3652471561 - 2⁹ = 3652471049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3652471591) 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, 25016856 + ... + 25017001.

It is an arithmetic number, because the mean of its divisors is an integer number (925626373).

Almost surely, 2^3652471561 is an apocalyptic number.

It is an amenable number.

3652471561 is a deficient number, since it is larger than the sum of its proper divisors (50033931).

3652471561 is an equidigital number, since it uses as much as digits as its factorization.

3652471561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50033930.

The product of its digits is 151200, while the sum is 40.

The square root of 3652471561 is about 60435.6811908330. The cubic root of 3652471561 is about 1540.0291725794.

The spelling of 3652471561 in words is "three billion, six hundred fifty-two million, four hundred seventy-one thousand, five hundred sixty-one".