2912561 has 2 divisors, whose sum is σ = 2912562. Its totient is φ = 2912560.

The previous prime is 2912551. The next prime is 2912573. The reversal of 2912561 is 1652192.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1849600 + 1062961 = 1360^2 + 1031^2 .

It is a cyclic number.

It is not a de Polignac number, because 2912561 - 2¹⁰ = 2911537 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2912561.

It is not a weakly prime, because it can be changed into another prime (2912501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1456280 + 1456281.

It is an arithmetic number, because the mean of its divisors is an integer number (1456281).

2^2912561 is an apocalyptic number.

It is an amenable number.

2912561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2912561 is an equidigital number, since it uses as much as digits as its factorization.

2912561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 26.

The square root of 2912561 is about 1706.6226882355. The cubic root of 2912561 is about 142.8099092894.

The spelling of 2912561 in words is "two million, nine hundred twelve thousand, five hundred sixty-one".