147505 has 4 divisors (see below), whose sum is σ = 177012. Its totient is φ = 118000.

The previous prime is 147503. The next prime is 147517. The reversal of 147505 is 505741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505741 = 523 ⋅967.

It can be written as a sum of positive squares in 2 ways, for example, as 55696 + 91809 = 236^2 + 303^2 .

It is not a de Polignac number, because 147505 - 2¹ = 147503 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14746 + ... + 14755.

It is an arithmetic number, because the mean of its divisors is an integer number (44253).

2¹⁴⁷⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

147505 is a deficient number, since it is larger than the sum of its proper divisors (29507).

147505 is an equidigital number, since it uses as much as digits as its factorization.

147505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29506.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 147505 is about 384.0637967838. The cubic root of 147505 is about 52.8366872742.

The spelling of 147505 in words is "one hundred forty-seven thousand, five hundred five".