2077561 has 2 divisors, whose sum is σ = 2077562. Its totient is φ = 2077560.

The previous prime is 2077549. The next prime is 2077571. The reversal of 2077561 is 1657702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1795600 + 281961 = 1340^2 + 531^2 .

It is a cyclic number.

It is not a de Polignac number, because 2077561 - 2¹⁷ = 1946489 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2077571) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1038780 + 1038781.

It is an arithmetic number, because the mean of its divisors is an integer number (1038781).

2^2077561 is an apocalyptic number.

It is an amenable number.

2077561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2077561 is an equidigital number, since it uses as much as digits as its factorization.

2077561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 2077561 is about 1441.3746910502. The cubic root of 2077561 is about 127.6001724627.

The spelling of 2077561 in words is "two million, seventy-seven thousand, five hundred sixty-one".