541329809 has 2 divisors, whose sum is σ = 541329810. Its totient is φ = 541329808.

The previous prime is 541329791. The next prime is 541329823. The reversal of 541329809 is 908923145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 444366400 + 96963409 = 21080^2 + 9847^2 .

It is a cyclic number.

It is not a de Polignac number, because 541329809 - 2⁸ = 541329553 is a prime.

It is a super-2 number, since 2×541329809² = 586075924223952962, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (541329839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270664904 + 270664905.

It is an arithmetic number, because the mean of its divisors is an integer number (270664905).

Almost surely, 2^541329809 is an apocalyptic number.

It is an amenable number.

541329809 is a deficient number, since it is larger than the sum of its proper divisors (1).

541329809 is an equidigital number, since it uses as much as digits as its factorization.

541329809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 541329809 is about 23266.4954172303. The cubic root of 541329809 is about 814.9931920091.

The spelling of 541329809 in words is "five hundred forty-one million, three hundred twenty-nine thousand, eight hundred nine".