2956561 has 2 divisors, whose sum is σ = 2956562. Its totient is φ = 2956560.

The previous prime is 2956553. The next prime is 2956621. The reversal of 2956561 is 1656592.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2954961 + 1600 = 1719^2 + 40^2 .

It is a cyclic number.

It is not a de Polignac number, because 2956561 - 2³ = 2956553 is a prime.

It is not a weakly prime, because it can be changed into another prime (2956531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1478280 + 1478281.

It is an arithmetic number, because the mean of its divisors is an integer number (1478281).

2^2956561 is an apocalyptic number.

It is an amenable number.

2956561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2956561 is an equidigital number, since it uses as much as digits as its factorization.

2956561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 34.

The square root of 2956561 is about 1719.4653238725. The cubic root of 2956561 is about 143.5254601598.

The spelling of 2956561 in words is "two million, nine hundred fifty-six thousand, five hundred sixty-one".