145605599 has 2 divisors, whose sum is σ = 145605600. Its totient is φ = 145605598.

The previous prime is 145605557. The next prime is 145605601. The reversal of 145605599 is 995506541.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145605599 is a prime.

It is a Sophie Germain prime.

Together with 145605601, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145605199) 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 as a sum of consecutive naturals, namely, 72802799 + 72802800.

It is an arithmetic number, because the mean of its divisors is an integer number (72802800).

Almost surely, 2^145605599 is an apocalyptic number.

145605599 is a deficient number, since it is larger than the sum of its proper divisors (1).

145605599 is an equidigital number, since it uses as much as digits as its factorization.

145605599 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 145605599 is about 12066.7145072716. The cubic root of 145605599 is about 526.0891662127.

The spelling of 145605599 in words is "one hundred forty-five million, six hundred five thousand, five hundred ninety-nine".