145185 has 8 divisors (see below), whose sum is σ = 232320. Its totient is φ = 77424.

The previous prime is 145177. The next prime is 145193. The reversal of 145185 is 581541.

It is an interprime number because it is at equal distance from previous prime (145177) and next prime (145193).

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

It is not a de Polignac number, because 145185 - 2³ = 145177 is a prime.

145185 is a modest number, since divided by 185 gives 145 as remainder.

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4825 + ... + 4854.

It is an arithmetic number, because the mean of its divisors is an integer number (29040).

2¹⁴⁵¹⁸⁵ is an apocalyptic number.

145185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145185 is a deficient number, since it is larger than the sum of its proper divisors (87135).

145185 is an equidigital number, since it uses as much as digits as its factorization.

145185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9687.

The product of its digits is 800, while the sum is 24.

The square root of 145185 is about 381.0314947613. The cubic root of 145185 is about 52.5582120745.

Subtracting from 145185 its sum of digits (24), we obtain a square (145161 = 381²).

The spelling of 145185 in words is "one hundred forty-five thousand, one hundred eighty-five".