145500 has 48 divisors (see below), whose sum is σ = 428064. Its totient is φ = 38400.

The previous prime is 145487. The next prime is 145501. The reversal of 145500 is 5541.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 145500.

It is a congruent number.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1452 + ... + 1548.

It is an arithmetic number, because the mean of its divisors is an integer number (8918).

2¹⁴⁵⁵⁰⁰ is an apocalyptic number.

145500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214032).

145500 is an abundant number, since it is smaller than the sum of its proper divisors (282564).

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

145500 is a wasteful number, since it uses less digits than its factorization.

145500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 145500 is about 381.4446224552. Note that the first 3 decimals coincide. The cubic root of 145500 is about 52.5961955158.

The spelling of 145500 in words is "one hundred forty-five thousand, five hundred".