541221 has 8 divisors (see below), whose sum is σ = 725760. Its totient is φ = 358752.

The previous prime is 541217. The next prime is 541231. The reversal of 541221 is 122145.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 541221 - 2² = 541217 is a prime.

It is a Curzon number.

541221 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 541221.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 541221.

It is not an unprimeable number, because it can be changed into a prime (541201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265 + ... + 1073.

It is an arithmetic number, because the mean of its divisors is an integer number (90720).

2⁵⁴¹²²¹ is an apocalyptic number.

It is an amenable number.

541221 is a deficient number, since it is larger than the sum of its proper divisors (184539).

541221 is a wasteful number, since it uses less digits than its factorization.

541221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035.

The product of its digits is 80, while the sum is 15.

The square root of 541221 is about 735.6772390118. The cubic root of 541221 is about 81.4938582949.

Adding to 541221 its reverse (122145), we get a palindrome (663366).

It can be divided in two parts, 54 and 1221, that added together give a triangular number (1275 = T₅₀).

The spelling of 541221 in words is "five hundred forty-one thousand, two hundred twenty-one".