63235561 has 4 divisors (see below), whose sum is σ = 63887572. Its totient is φ = 62583552.

The previous prime is 63235559. The next prime is 63235577. The reversal of 63235561 is 16553236.

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 42250000 + 20985561 = 6500^2 + 4581^2 .

It is a cyclic number.

It is not a de Polignac number, because 63235561 - 2¹ = 63235559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63235541) 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, 325860 + ... + 326053.

It is an arithmetic number, because the mean of its divisors is an integer number (15971893).

Almost surely, 2^63235561 is an apocalyptic number.

It is an amenable number.

63235561 is a deficient number, since it is larger than the sum of its proper divisors (652011).

63235561 is an equidigital number, since it uses as much as digits as its factorization.

63235561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652010.

The product of its digits is 16200, while the sum is 31.

The square root of 63235561 is about 7952.0790363275. The cubic root of 63235561 is about 398.4010355485.

Adding to 63235561 its reverse (16553236), we get a palindrome (79788797).

The spelling of 63235561 in words is "sixty-three million, two hundred thirty-five thousand, five hundred sixty-one".