145532443 has 4 divisors (see below), whose sum is σ = 166322800. Its totient is φ = 124742088.

The previous prime is 145532437. The next prime is 145532447. The reversal of 145532443 is 344235541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344235541 = 13 ⋅26479657.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145532443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145532447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10395168 + ... + 10395181.

It is an arithmetic number, because the mean of its divisors is an integer number (41580700).

Almost surely, 2^145532443 is an apocalyptic number.

145532443 is a deficient number, since it is larger than the sum of its proper divisors (20790357).

145532443 is an equidigital number, since it uses as much as digits as its factorization.

145532443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20790356.

The product of its digits is 28800, while the sum is 31.

The square root of 145532443 is about 12063.6828124748. The cubic root of 145532443 is about 526.0010445410.

Adding to 145532443 its reverse (344235541), we get a palindrome (489767984).

The spelling of 145532443 in words is "one hundred forty-five million, five hundred thirty-two thousand, four hundred forty-three".