150565 has 4 divisors (see below), whose sum is σ = 180684. Its totient is φ = 120448.

The previous prime is 150559. The next prime is 150571. The reversal of 150565 is 565051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 565051 = 547 ⋅1033.

It is an interprime number because it is at equal distance from previous prime (150559) and next prime (150571).

It can be written as a sum of positive squares in 2 ways, for example, as 103041 + 47524 = 321^2 + 218^2 .

It is a cyclic number.

It is not a de Polignac number, because 150565 - 2⁵ = 150533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15052 + ... + 15061.

It is an arithmetic number, because the mean of its divisors is an integer number (45171).

2¹⁵⁰⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

150565 is a deficient number, since it is larger than the sum of its proper divisors (30119).

150565 is an equidigital number, since it uses as much as digits as its factorization.

150565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30118.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 150565 is about 388.0270609120. The cubic root of 150565 is about 53.1995562177.

The spelling of 150565 in words is "one hundred fifty thousand, five hundred sixty-five".