541111409 has 4 divisors (see below), whose sum is σ = 564638016. Its totient is φ = 517584804.

The previous prime is 541111381. The next prime is 541111429. The reversal of 541111409 is 904111145.

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 541111409 - 2¹⁶ = 541045873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (541111429) 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, 11763269 + ... + 11763314.

It is an arithmetic number, because the mean of its divisors is an integer number (141159504).

Almost surely, 2^541111409 is an apocalyptic number.

It is an amenable number.

541111409 is a deficient number, since it is larger than the sum of its proper divisors (23526607).

541111409 is a wasteful number, since it uses less digits than its factorization.

541111409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23526606.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 541111409 is about 23261.8014994540. The cubic root of 541111409 is about 814.8835740196.

The spelling of 541111409 in words is "five hundred forty-one million, one hundred eleven thousand, four hundred nine".