145505543 has 2 divisors, whose sum is σ = 145505544. Its totient is φ = 145505542.

The previous prime is 145505531. The next prime is 145505609. The reversal of 145505543 is 345505541.

It is a weak prime.

It is an emirp because it is prime and its reverse (345505541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145505543 - 2⁴ = 145505527 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145505513) 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 as a sum of consecutive naturals, namely, 72752771 + 72752772.

It is an arithmetic number, because the mean of its divisors is an integer number (72752772).

Almost surely, 2^145505543 is an apocalyptic number.

145505543 is a deficient number, since it is larger than the sum of its proper divisors (1).

145505543 is an equidigital number, since it uses as much as digits as its factorization.

145505543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 145505543 is about 12062.5678443688. The cubic root of 145505543 is about 525.9686341275.

The spelling of 145505543 in words is "one hundred forty-five million, five hundred five thousand, five hundred forty-three".