145595605 has 4 divisors (see below), whose sum is σ = 174714732. Its totient is φ = 116476480.

The previous prime is 145595603. The next prime is 145595663. The reversal of 145595605 is 506595541.

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 84474481 + 61121124 = 9191^2 + 7818^2 .

It is not a de Polignac number, because 145595605 - 2¹ = 145595603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145595603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14559556 + ... + 14559565.

It is an arithmetic number, because the mean of its divisors is an integer number (43678683).

Almost surely, 2^145595605 is an apocalyptic number.

It is an amenable number.

145595605 is a deficient number, since it is larger than the sum of its proper divisors (29119127).

145595605 is an equidigital number, since it uses as much as digits as its factorization.

145595605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29119126.

The product of its (nonzero) digits is 135000, while the sum is 40.

The square root of 145595605 is about 12066.3003857852. The cubic root of 145595605 is about 526.0771294608.

It can be divided in two parts, 14559 and 5605, that added together give a square (20164 = 142²).

The spelling of 145595605 in words is "one hundred forty-five million, five hundred ninety-five thousand, six hundred five".