145536593 has 4 divisors (see below), whose sum is σ = 149086308. Its totient is φ = 141986880.

The previous prime is 145536563. The next prime is 145536613. The reversal of 145536593 is 395635541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13010449 + 132526144 = 3607^2 + 11512^2 .

It is a cyclic number.

It is not a de Polignac number, because 145536593 - 2¹⁴ = 145520209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 3549673 = 145536593 / (1 + 4 + 5 + 5 + 3 + 6 + 5 + 9 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145536593.

It is not an unprimeable number, because it can be changed into a prime (145536563) 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, 1774796 + ... + 1774877.

It is an arithmetic number, because the mean of its divisors is an integer number (37271577).

Almost surely, 2^145536593 is an apocalyptic number.

It is an amenable number.

145536593 is a deficient number, since it is larger than the sum of its proper divisors (3549715).

145536593 is an equidigital number, since it uses as much as digits as its factorization.

145536593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3549714.

The product of its digits is 243000, while the sum is 41.

The square root of 145536593 is about 12063.8548151078. The cubic root of 145536593 is about 526.0060443050.

The spelling of 145536593 in words is "one hundred forty-five million, five hundred thirty-six thousand, five hundred ninety-three".