145504 has 12 divisors (see below), whose sum is σ = 286524. Its totient is φ = 72736.

The previous prime is 145501. The next prime is 145511. The reversal of 145504 is 405541.

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 as a sum of consecutive naturals, namely, 2242 + ... + 2305.

It is an arithmetic number, because the mean of its divisors is an integer number (23877).

2¹⁴⁵⁵⁰⁴ is an apocalyptic number.

It is an amenable number.

145504 is a deficient number, since it is larger than the sum of its proper divisors (141020).

145504 is an equidigital number, since it uses as much as digits as its factorization.

145504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4557 (or 4549 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 145504 is about 381.4498656442. The cubic root of 145504 is about 52.5966774926.

The spelling of 145504 in words is "one hundred forty-five thousand, five hundred four".