2541761 has 4 divisors (see below), whose sum is σ = 2560452. Its totient is φ = 2523072.

The previous prime is 2541757. The next prime is 2541769. The reversal of 2541761 is 1671452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 732736 + 1809025 = 856^2 + 1345^2 .

It is a cyclic number.

It is not a de Polignac number, because 2541761 - 2² = 2541757 is a prime.

It is a super-2 number, since 2×2541761² = 12921097962242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2541761.

It is not an unprimeable number, because it can be changed into a prime (2541769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9140 + ... + 9413.

It is an arithmetic number, because the mean of its divisors is an integer number (640113).

2^2541761 is an apocalyptic number.

It is an amenable number.

2541761 is a deficient number, since it is larger than the sum of its proper divisors (18691).

2541761 is a wasteful number, since it uses less digits than its factorization.

2541761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18690.

The product of its digits is 1680, while the sum is 26.

The square root of 2541761 is about 1594.2901241618. The cubic root of 2541761 is about 136.4724235060.

The spelling of 2541761 in words is "two million, five hundred forty-one thousand, seven hundred sixty-one".