145508 has 12 divisors (see below), whose sum is σ = 277872. Its totient is φ = 66120.

The previous prime is 145501. The next prime is 145511. The reversal of 145508 is 805541.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (145501) by changing a digit.

145508 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 1610 + ... + 1697.

It is an arithmetic number, because the mean of its divisors is an integer number (23156).

2¹⁴⁵⁵⁰⁸ is an apocalyptic number.

It is an amenable number.

145508 is a deficient number, since it is larger than the sum of its proper divisors (132364).

145508 is a wasteful number, since it uses less digits than its factorization.

145508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3322 (or 3320 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 145508 is about 381.4551087612. The cubic root of 145508 is about 52.5971594605.

The spelling of 145508 in words is "one hundred forty-five thousand, five hundred eight".