38545565 has 4 divisors (see below), whose sum is σ = 46254684. Its totient is φ = 30836448.

The previous prime is 38545537. The next prime is 38545567. The reversal of 38545565 is 56554583.

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 25999801 + 12545764 = 5099^2 + 3542^2 .

It is a cyclic number.

It is not a de Polignac number, because 38545565 - 2²⁴ = 21768349 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 (38545567) 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, 3854552 + ... + 3854561.

It is an arithmetic number, because the mean of its divisors is an integer number (11563671).

Almost surely, 2^38545565 is an apocalyptic number.

It is an amenable number.

38545565 is a deficient number, since it is larger than the sum of its proper divisors (7709119).

38545565 is an equidigital number, since it uses as much as digits as its factorization.

38545565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7709118.

The product of its digits is 360000, while the sum is 41.

The square root of 38545565 is about 6208.5074695936. The cubic root of 38545565 is about 337.7988281557.

The spelling of 38545565 in words is "thirty-eight million, five hundred forty-five thousand, five hundred sixty-five".