2965561 has 2 divisors, whose sum is σ = 2965562. Its totient is φ = 2965560.

The previous prime is 2965549. The next prime is 2965579. The reversal of 2965561 is 1655692.

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., 2941225 + 24336 = 1715^2 + 156^2 .

It is a cyclic number.

It is not a de Polignac number, because 2965561 - 2¹⁵ = 2932793 is a prime.

2965561 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2965541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1482780 + 1482781.

It is an arithmetic number, because the mean of its divisors is an integer number (1482781).

2^2965561 is an apocalyptic number.

It is an amenable number.

2965561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2965561 is an equidigital number, since it uses as much as digits as its factorization.

2965561 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2965561 is about 1722.0804278546. The cubic root of 2965561 is about 143.6709468300.

The spelling of 2965561 in words is "two million, nine hundred sixty-five thousand, five hundred sixty-one".