145745345 has 4 divisors (see below), whose sum is σ = 174894420. Its totient is φ = 116596272.

The previous prime is 145745311. The next prime is 145745357. The reversal of 145745345 is 543547541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543547541 = 12979 ⋅41879.

It can be written as a sum of positive squares in 2 ways, for example, as 37834801 + 107910544 = 6151^2 + 10388^2 .

It is a cyclic number.

It is not a de Polignac number, because 145745345 - 2¹² = 145741249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145745299 and 145745308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14574530 + ... + 14574539.

It is an arithmetic number, because the mean of its divisors is an integer number (43723605).

Almost surely, 2^145745345 is an apocalyptic number.

It is an amenable number.

145745345 is a deficient number, since it is larger than the sum of its proper divisors (29149075).

145745345 is an equidigital number, since it uses as much as digits as its factorization.

145745345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29149074.

The product of its digits is 168000, while the sum is 38.

The square root of 145745345 is about 12072.5036757087. The cubic root of 145745345 is about 526.2574183257.

The spelling of 145745345 in words is "one hundred forty-five million, seven hundred forty-five thousand, three hundred forty-five".