145523 has 4 divisors (see below), whose sum is σ = 166320. Its totient is φ = 124728.

The previous prime is 145517. The next prime is 145531. The reversal of 145523 is 325541.

145523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145523 - 2⁶ = 145459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145495 and 145504.

It is not an unprimeable number, because it can be changed into a prime (145513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10388 + ... + 10401.

It is an arithmetic number, because the mean of its divisors is an integer number (41580).

2¹⁴⁵⁵²³ is an apocalyptic number.

145523 is a deficient number, since it is larger than the sum of its proper divisors (20797).

145523 is an equidigital number, since it uses as much as digits as its factorization.

145523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20796.

The product of its digits is 600, while the sum is 20.

The square root of 145523 is about 381.4747698079. The cubic root of 145523 is about 52.5989667615.

The spelling of 145523 in words is "one hundred forty-five thousand, five hundred twenty-three".