2891541 has 4 divisors (see below), whose sum is σ = 3855392. Its totient is φ = 1927692.

The previous prime is 2891527. The next prime is 2891543. The reversal of 2891541 is 1451982.

It is a happy number.

2891541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2891541 - 2⁵ = 2891509 is a prime.

It is a super-2 number, since 2×2891541² = 16722018709362, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2891499 and 2891508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2891543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481921 + ... + 481926.

It is an arithmetic number, because the mean of its divisors is an integer number (963848).

2^2891541 is an apocalyptic number.

It is an amenable number.

2891541 is a deficient number, since it is larger than the sum of its proper divisors (963851).

2891541 is an equidigital number, since it uses as much as digits as its factorization.

2891541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963850.

The product of its digits is 2880, while the sum is 30.

The square root of 2891541 is about 1700.4531748919. The cubic root of 2891541 is about 142.4655256709.

It can be divided in two parts, 289 and 1541, that added together give a triangular number (1830 = T₆₀).

The spelling of 2891541 in words is "two million, eight hundred ninety-one thousand, five hundred forty-one".