145604045 has 4 divisors (see below), whose sum is σ = 174724860. Its totient is φ = 116483232.

The previous prime is 145604027. The next prime is 145604047. The reversal of 145604045 is 540406541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540406541 = 1367 ⋅395323.

It can be written as a sum of positive squares in 2 ways, for example, as 32330596 + 113273449 = 5686^2 + 10643^2 .

It is a cyclic number.

It is not a de Polignac number, because 145604045 - 2²⁶ = 78495181 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 145603999 and 145604017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145604047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14560400 + ... + 14560409.

It is an arithmetic number, because the mean of its divisors is an integer number (43681215).

Almost surely, 2^145604045 is an apocalyptic number.

It is an amenable number.

145604045 is a deficient number, since it is larger than the sum of its proper divisors (29120815).

145604045 is an equidigital number, since it uses as much as digits as its factorization.

145604045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29120814.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 145604045 is about 12066.6501150899. The cubic root of 145604045 is about 526.0872946147.

The spelling of 145604045 in words is "one hundred forty-five million, six hundred four thousand, forty-five".