406541 has 4 divisors (see below), whose sum is σ = 410592. Its totient is φ = 402492.

The previous prime is 406531. The next prime is 406547. The reversal of 406541 is 145604.

It is a happy number.

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 not a de Polignac number, because 406541 - 2¹⁴ = 390157 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 (406547) 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, 1871 + ... + 2076.

It is an arithmetic number, because the mean of its divisors is an integer number (102648).

2⁴⁰⁶⁵⁴¹ is an apocalyptic number.

It is an amenable number.

406541 is a deficient number, since it is larger than the sum of its proper divisors (4051).

406541 is a wasteful number, since it uses less digits than its factorization.

406541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4050.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 406541 is about 637.6056775155. The cubic root of 406541 is about 74.0800813122.

The spelling of 406541 in words is "four hundred six thousand, five hundred forty-one".