145808593 has 16 divisors (see below), whose sum is σ = 172523520. Its totient is φ = 120589200.

The previous prime is 145808591. The next prime is 145808599. The reversal of 145808593 is 395808541.

It is a cyclic number.

It is not a de Polignac number, because 145808593 - 2¹ = 145808591 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145808591) 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 15 ways as a sum of consecutive naturals, for example, 92748 + ... + 94306.

It is an arithmetic number, because the mean of its divisors is an integer number (10782720).

Almost surely, 2^145808593 is an apocalyptic number.

It is an amenable number.

145808593 is a deficient number, since it is larger than the sum of its proper divisors (26714927).

145808593 is a wasteful number, since it uses less digits than its factorization.

145808593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028.

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 145808593 is about 12075.1228979253. The cubic root of 145808593 is about 526.3335326276. Note that the first 3 decimals are identical.

The spelling of 145808593 in words is "one hundred forty-five million, eight hundred eight thousand, five hundred ninety-three".