2541561 has 8 divisors (see below), whose sum is σ = 3696864. Its totient is φ = 1540320.

The previous prime is 2541559. The next prime is 2541563. The reversal of 2541561 is 1651452.

It is an interprime number because it is at equal distance from previous prime (2541559) and next prime (2541563).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2541561 - 2¹ = 2541559 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2541563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38476 + ... + 38541.

It is an arithmetic number, because the mean of its divisors is an integer number (462108).

2^2541561 is an apocalyptic number.

It is an amenable number.

2541561 is a deficient number, since it is larger than the sum of its proper divisors (1155303).

2541561 is a wasteful number, since it uses less digits than its factorization.

2541561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77031.

The product of its digits is 1200, while the sum is 24.

The square root of 2541561 is about 1594.2273990871. The cubic root of 2541561 is about 136.4688439405.

The spelling of 2541561 in words is "two million, five hundred forty-one thousand, five hundred sixty-one".