145345 has 8 divisors (see below), whose sum is σ = 178920. Its totient is φ = 113280.

The previous prime is 145307. The next prime is 145349. The reversal of 145345 is 543541.

145345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3969 + 141376 = 63^2 + 376^2 .

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

It is not a de Polignac number, because 145345 - 2¹³ = 137153 is a prime.

It is a super-2 number, since 2×145345² = 42250338050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150 + ... + 559.

It is an arithmetic number, because the mean of its divisors is an integer number (22365).

145345 is a Friedman number, since it can be written as 3545*41, using all its digits and the basic arithmetic operations.

2¹⁴⁵³⁴⁵ is an apocalyptic number.

It is an amenable number.

145345 is a deficient number, since it is larger than the sum of its proper divisors (33575).

145345 is an equidigital number, since it uses as much as digits as its factorization.

145345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755.

The product of its digits is 1200, while the sum is 22.

The square root of 145345 is about 381.2413933455. The cubic root of 145345 is about 52.5775121094.

Adding to 145345 its reverse (543541), we get a palindrome (688886).

The spelling of 145345 in words is "one hundred forty-five thousand, three hundred forty-five".