145544423 has 2 divisors, whose sum is σ = 145544424. Its totient is φ = 145544422.

The previous prime is 145544419. The next prime is 145544431. The reversal of 145544423 is 324445541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145544423 - 2² = 145544419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145544423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145514423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72772211 + 72772212.

It is an arithmetic number, because the mean of its divisors is an integer number (72772212).

Almost surely, 2^145544423 is an apocalyptic number.

145544423 is a deficient number, since it is larger than the sum of its proper divisors (1).

145544423 is an equidigital number, since it uses as much as digits as its factorization.

145544423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38400, while the sum is 32.

The square root of 145544423 is about 12064.1793338793. The cubic root of 145544423 is about 526.0154773357.

Adding to 145544423 its reverse (324445541), we get a palindrome (469989964).

The spelling of 145544423 in words is "one hundred forty-five million, five hundred forty-four thousand, four hundred twenty-three".