541401811 has 4 divisors (see below), whose sum is σ = 542017224. Its totient is φ = 540786400.

The previous prime is 541401787. The next prime is 541401823. The reversal of 541401811 is 118104145.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 541401811 - 2²⁷ = 407184083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (541401881) 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 3 ways as a sum of consecutive naturals, for example, 306385 + ... + 308146.

It is an arithmetic number, because the mean of its divisors is an integer number (135504306).

Almost surely, 2^541401811 is an apocalyptic number.

541401811 is a deficient number, since it is larger than the sum of its proper divisors (615413).

541401811 is an equidigital number, since it uses as much as digits as its factorization.

541401811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615412.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 541401811 is about 23268.0426980870. The cubic root of 541401811 is about 815.0293243492.

Adding to 541401811 its reverse (118104145), we get a palindrome (659505956).

The spelling of 541401811 in words is "five hundred forty-one million, four hundred one thousand, eight hundred eleven".