3200115561 has 4 divisors (see below), whose sum is σ = 4266820752. Its totient is φ = 2133410372.

The previous prime is 3200115539. The next prime is 3200115563. The reversal of 3200115561 is 1655110023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3200115561 - 2⁶ = 3200115497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3200115563) 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, 533352591 + ... + 533352596.

It is an arithmetic number, because the mean of its divisors is an integer number (1066705188).

Almost surely, 2^3200115561 is an apocalyptic number.

It is an amenable number.

3200115561 is a deficient number, since it is larger than the sum of its proper divisors (1066705191).

3200115561 is a wasteful number, since it uses less digits than its factorization.

3200115561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066705190.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 3200115561 is about 56569.5639102866. The cubic root of 3200115561 is about 1473.6303380078.

Adding to 3200115561 its reverse (1655110023), we get a palindrome (4855225584).

The spelling of 3200115561 in words is "three billion, two hundred million, one hundred fifteen thousand, five hundred sixty-one".