541820 has 12 divisors (see below), whose sum is σ = 1137864. Its totient is φ = 216720.

The previous prime is 541817. The next prime is 541831. The reversal of 541820 is 28145.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 27091 = 541820 / (5 + 4 + 1 + 8 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 541792 and 541801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13526 + ... + 13565.

It is an arithmetic number, because the mean of its divisors is an integer number (94822).

2⁵⁴¹⁸²⁰ is an apocalyptic number.

It is an amenable number.

541820 is an abundant number, since it is smaller than the sum of its proper divisors (596044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

541820 is a wasteful number, since it uses less digits than its factorization.

541820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27100 (or 27098 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 541820 is about 736.0842343102. The cubic root of 541820 is about 81.5239118365.

Adding to 541820 its reverse (28145), we get a palindrome (569965).

The spelling of 541820 in words is "five hundred forty-one thousand, eight hundred twenty".