4235536561 has 9 divisors (see below), whose sum is σ = 4273687929. Its totient is φ = 4197724500.

The previous prime is 4235536523. The next prime is 4235536583. The reversal of 4235536561 is 1656355324.

The square root of 4235536561 is 65081.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 4235536561 - 2¹³ = 4235528369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4235530561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9827016 + ... + 9827446.

Almost surely, 2^4235536561 is an apocalyptic number.

4235536561 is the 65081-st square number.

4235536561 is the 32541-st centered octagonal number.

It is an amenable number.

4235536561 is a deficient number, since it is larger than the sum of its proper divisors (38151368).

4235536561 is an frugal number, since it uses more digits than its factorization.

4235536561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164 (or 582 counting only the distinct ones).

The product of its digits is 324000, while the sum is 40.

The cubic root of 4235536561 is about 1617.9663249068.

The spelling of 4235536561 in words is "four billion, two hundred thirty-five million, five hundred thirty-six thousand, five hundred sixty-one".