3072561 has 8 divisors (see below), whose sum is σ = 4107840. Its totient is φ = 2042832.

The previous prime is 3072557. The next prime is 3072607. The reversal of 3072561 is 1652703.

3072561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3072561 - 2² = 3072557 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3072541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151 + ... + 2483.

It is an arithmetic number, because the mean of its divisors is an integer number (513480).

Almost surely, 2^3072561 is an apocalyptic number.

It is an amenable number.

3072561 is a deficient number, since it is larger than the sum of its proper divisors (1035279).

3072561 is a wasteful number, since it uses less digits than its factorization.

3072561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 3072561 is about 1752.8722143956. The cubic root of 3072561 is about 145.3784958867.

The spelling of 3072561 in words is "three million, seventy-two thousand, five hundred sixty-one".