541221051 has 16 divisors (see below), whose sum is σ = 836017664. Its totient is φ = 305031744.

The previous prime is 541221029. The next prime is 541221067. The reversal of 541221051 is 150122145.

It is not a de Polignac number, because 541221051 - 2⁹ = 541220539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (541221011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174991 + ... + 178056.

It is an arithmetic number, because the mean of its divisors is an integer number (52251104).

Almost surely, 2^541221051 is an apocalyptic number.

541221051 is a deficient number, since it is larger than the sum of its proper divisors (294796613).

541221051 is a wasteful number, since it uses less digits than its factorization.

541221051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353130.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 541221051 is about 23264.1580763199. The cubic root of 541221051 is about 814.9386085464.

Adding to 541221051 its reverse (150122145), we get a palindrome (691343196).

The spelling of 541221051 in words is "five hundred forty-one million, two hundred twenty-one thousand, fifty-one".