2023541 has 4 divisors (see below), whose sum is σ = 2179212. Its totient is φ = 1867872.

The previous prime is 2023531. The next prime is 2023543. The reversal of 2023541 is 1453202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1453202 = 2 ⋅726601.

It can be written as a sum of positive squares in 2 ways, for example, as 461041 + 1562500 = 679^2 + 1250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2023541 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 (2023543) 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, 77816 + ... + 77841.

It is an arithmetic number, because the mean of its divisors is an integer number (544803).

2^2023541 is an apocalyptic number.

It is an amenable number.

2023541 is a deficient number, since it is larger than the sum of its proper divisors (155671).

2023541 is a wasteful number, since it uses less digits than its factorization.

2023541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155670.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2023541 is about 1422.5122143588. The cubic root of 2023541 is about 126.4845080936.

Adding to 2023541 its reverse (1453202), we get a palindrome (3476743).

The spelling of 2023541 in words is "two million, twenty-three thousand, five hundred forty-one".