4352172565 has 8 divisors (see below), whose sum is σ = 5624346168. Its totient is φ = 3213912000.

The previous prime is 4352172557. The next prime is 4352172569. The reversal of 4352172565 is 5652712534.

It can be written as a sum of positive squares in 4 ways, for example, as 193599396 + 4158573169 = 13914^2 + 64487^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4352172565 - 2³ = 4352172557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4352172569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33478186 + ... + 33478315.

It is an arithmetic number, because the mean of its divisors is an integer number (703043271).

Almost surely, 2^4352172565 is an apocalyptic number.

It is an amenable number.

4352172565 is a deficient number, since it is larger than the sum of its proper divisors (1272173603).

4352172565 is a wasteful number, since it uses less digits than its factorization.

4352172565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66956519.

The product of its digits is 252000, while the sum is 40.

The square root of 4352172565 is about 65970.9979081717. The cubic root of 4352172565 is about 1632.6836198571.

Subtracting 4352172565 from its reverse (5652712534), we obtain a square (1300539969 = 36063²).

The spelling of 4352172565 in words is "four billion, three hundred fifty-two million, one hundred seventy-two thousand, five hundred sixty-five".