2561341 has 2 divisors, whose sum is σ = 2561342. Its totient is φ = 2561340.

The previous prime is 2561327. The next prime is 2561387. The reversal of 2561341 is 1431652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1651225 + 910116 = 1285^2 + 954^2 .

It is a cyclic number.

It is not a de Polignac number, because 2561341 - 2¹³ = 2553149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2061341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1280670 + 1280671.

It is an arithmetic number, because the mean of its divisors is an integer number (1280671).

2^2561341 is an apocalyptic number.

It is an amenable number.

2561341 is a deficient number, since it is larger than the sum of its proper divisors (1).

2561341 is an equidigital number, since it uses as much as digits as its factorization.

2561341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 22.

The square root of 2561341 is about 1600.4190076352. The cubic root of 2561341 is about 136.8219577911.

Adding to 2561341 its reverse (1431652), we get a palindrome (3992993).

The spelling of 2561341 in words is "two million, five hundred sixty-one thousand, three hundred forty-one".