541502165 has 4 divisors (see below), whose sum is σ = 649802604. Its totient is φ = 433201728.

The previous prime is 541502149. The next prime is 541502167. The reversal of 541502165 is 561205145.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 282710596 + 258791569 = 16814^2 + 16087^2 .

It is a cyclic number.

It is not a de Polignac number, because 541502165 - 2⁴ = 541502149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (541502167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54150212 + ... + 54150221.

It is an arithmetic number, because the mean of its divisors is an integer number (162450651).

Almost surely, 2^541502165 is an apocalyptic number.

It is an amenable number.

541502165 is a deficient number, since it is larger than the sum of its proper divisors (108300439).

541502165 is a wasteful number, since it uses less digits than its factorization.

541502165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108300438.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 541502165 is about 23270.1990752121. The cubic root of 541502165 is about 815.0796790630.

The spelling of 541502165 in words is "five hundred forty-one million, five hundred two thousand, one hundred sixty-five".