3102561 has 48 divisors (see below), whose sum is σ = 5785728. Its totient is φ = 1568160.

The previous prime is 3102557. The next prime is 3102571. The reversal of 3102561 is 1652013.

3102561 is a `hidden beast` number, since 3 + 102 + 561 = 666.

It is not a de Polignac number, because 3102561 - 2² = 3102557 is a prime.

It is a Curzon number.

3102561 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3102571) 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 47 ways as a sum of consecutive naturals, for example, 83835 + ... + 83871.

It is an arithmetic number, because the mean of its divisors is an integer number (120536).

Almost surely, 2^3102561 is an apocalyptic number.

It is an amenable number.

3102561 is a deficient number, since it is larger than the sum of its proper divisors (2683167).

3102561 is a wasteful number, since it uses less digits than its factorization.

3102561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 3102561 is about 1761.4088111509. The cubic root of 3102561 is about 145.8501151481.

Adding to 3102561 its reverse (1652013), we get a palindrome (4754574).

It can be divided in two parts, 3102 and 561, that added together give a palindrome (3663).

The spelling of 3102561 in words is "three million, one hundred two thousand, five hundred sixty-one".