40541 has 4 divisors (see below), whose sum is σ = 41184. Its totient is φ = 39900.

The previous prime is 40531. The next prime is 40543. The reversal of 40541 is 14504.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40543) 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, 215 + ... + 356.

It is an arithmetic number, because the mean of its divisors is an integer number (10296).

2⁴⁰⁵⁴¹ is an apocalyptic number.

It is an amenable number.

40541 is a deficient number, since it is larger than the sum of its proper divisors (643).

40541 is an equidigital number, since it uses as much as digits as its factorization.

40541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 40541 is about 201.3479575263. The cubic root of 40541 is about 34.3530118335.

The spelling of 40541 in words is "forty thousand, five hundred forty-one".