2122541 has 4 divisors (see below), whose sum is σ = 2138172. Its totient is φ = 2106912.

The previous prime is 2122531. The next prime is 2122553. The reversal of 2122541 is 1452212.

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 570025 + 1552516 = 755^2 + 1246^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122511) 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, 7610 + ... + 7883.

It is an arithmetic number, because the mean of its divisors is an integer number (534543).

2^2122541 is an apocalyptic number.

It is an amenable number.

2122541 is a deficient number, since it is larger than the sum of its proper divisors (15631).

2122541 is a wasteful number, since it uses less digits than its factorization.

2122541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15630.

The product of its digits is 160, while the sum is 17.

The square root of 2122541 is about 1456.8942995290. The cubic root of 2122541 is about 128.5144699497.

Adding to 2122541 its reverse (1452212), we get a palindrome (3574753).

The spelling of 2122541 in words is "two million, one hundred twenty-two thousand, five hundred forty-one".