2261541 has 4 divisors (see below), whose sum is σ = 3015392. Its totient is φ = 1507692.

The previous prime is 2261531. The next prime is 2261549. The reversal of 2261541 is 1451622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2261541 - 2⁵ = 2261509 is a prime.

It is a super-2 number, since 2×2261541² = 10229135389362, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

2261541 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376921 + ... + 376926.

It is an arithmetic number, because the mean of its divisors is an integer number (753848).

2^2261541 is an apocalyptic number.

It is an amenable number.

2261541 is a deficient number, since it is larger than the sum of its proper divisors (753851).

2261541 is an equidigital number, since it uses as much as digits as its factorization.

2261541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753850.

The product of its digits is 480, while the sum is 21.

The square root of 2261541 is about 1503.8420794751. The cubic root of 2261541 is about 131.2607320023.

The spelling of 2261541 in words is "two million, two hundred sixty-one thousand, five hundred forty-one".