2167541 has 4 divisors (see below), whose sum is σ = 2208492. Its totient is φ = 2126592.

The previous prime is 2167537. The next prime is 2167549. The reversal of 2167541 is 1457612.

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 1745041 + 422500 = 1321^2 + 650^2 .

It is a cyclic number.

It is not a de Polignac number, because 2167541 - 2² = 2167537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2167541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2167549) 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, 20396 + ... + 20501.

It is an arithmetic number, because the mean of its divisors is an integer number (552123).

2^2167541 is an apocalyptic number.

It is an amenable number.

2167541 is a deficient number, since it is larger than the sum of its proper divisors (40951).

2167541 is an equidigital number, since it uses as much as digits as its factorization.

2167541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40950.

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

The square root of 2167541 is about 1472.2571106977. The cubic root of 2167541 is about 129.4163380858.

The spelling of 2167541 in words is "two million, one hundred sixty-seven thousand, five hundred forty-one".