145543843 has 4 divisors (see below), whose sum is σ = 145709928. Its totient is φ = 145377760.

The previous prime is 145543831. The next prime is 145543859. The reversal of 145543843 is 348345541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 348345541 = 181 ⋅1924561.

It is a cyclic number.

It is not a de Polignac number, because 145543843 - 2⁹ = 145543331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145543813) 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, 81721 + ... + 83482.

It is an arithmetic number, because the mean of its divisors is an integer number (36427482).

Almost surely, 2^145543843 is an apocalyptic number.

145543843 is a deficient number, since it is larger than the sum of its proper divisors (166085).

145543843 is an equidigital number, since it uses as much as digits as its factorization.

145543843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166084.

The product of its digits is 115200, while the sum is 37.

The square root of 145543843 is about 12064.1552957511. The cubic root of 145543843 is about 526.0147786043.

The spelling of 145543843 in words is "one hundred forty-five million, five hundred forty-three thousand, eight hundred forty-three".