145385 has 4 divisors (see below), whose sum is σ = 174468. Its totient is φ = 116304.

The previous prime is 145381. The next prime is 145391. The reversal of 145385 is 583541.

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

It can be written as a sum of positive squares in 2 ways, for example, as 85849 + 59536 = 293^2 + 244^2 .

It is a cyclic number.

It is not a de Polignac number, because 145385 - 2² = 145381 is a prime.

It is a super-2 number, since 2×145385² = 42273596450, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145385.

It is not an unprimeable number, because it can be changed into a prime (145381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14534 + ... + 14543.

It is an arithmetic number, because the mean of its divisors is an integer number (43617).

2¹⁴⁵³⁸⁵ is an apocalyptic number.

It is an amenable number.

145385 is a deficient number, since it is larger than the sum of its proper divisors (29083).

145385 is an equidigital number, since it uses as much as digits as its factorization.

145385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29082.

The product of its digits is 2400, while the sum is 26.

The square root of 145385 is about 381.2938499373. The cubic root of 145385 is about 52.5823349047.

The spelling of 145385 in words is "one hundred forty-five thousand, three hundred eighty-five".