145506 has 8 divisors (see below), whose sum is σ = 291024. Its totient is φ = 48500.

The previous prime is 145501. The next prime is 145511. The reversal of 145506 is 605541.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (145501) and next prime (145511).

It is a sphenic number, since it is the product of 3 distinct primes.

145506 is an admirable number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145506.

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

145506 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, 12120 + ... + 12131.

It is an arithmetic number, because the mean of its divisors is an integer number (36378).

2¹⁴⁵⁵⁰⁶ is an apocalyptic number.

145506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145506 is a wasteful number, since it uses less digits than its factorization.

145506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24256.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 145506 is about 381.4524872117. The cubic root of 145506 is about 52.5969184776.

The spelling of 145506 in words is "one hundred forty-five thousand, five hundred six".