2561411 has 2 divisors, whose sum is σ = 2561412. Its totient is φ = 2561410.

The previous prime is 2561401. The next prime is 2561423. The reversal of 2561411 is 1141652.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2561411 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2561401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1280705 + 1280706.

It is an arithmetic number, because the mean of its divisors is an integer number (1280706).

2^2561411 is an apocalyptic number.

2561411 is a deficient number, since it is larger than the sum of its proper divisors (1).

2561411 is an equidigital number, since it uses as much as digits as its factorization.

2561411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 20.

The square root of 2561411 is about 1600.4408767587. The cubic root of 2561411 is about 136.8232042020.

The spelling of 2561411 in words is "two million, five hundred sixty-one thousand, four hundred eleven".