145576565 has 4 divisors (see below), whose sum is σ = 174691884. Its totient is φ = 116461248.

The previous prime is 145576547. The next prime is 145576579. The reversal of 145576565 is 565675541.

145576565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 29669809 + 115906756 = 5447^2 + 10766^2 .

It is a cyclic number.

It is not a de Polignac number, because 145576565 - 2¹⁰ = 145575541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14557652 + ... + 14557661.

It is an arithmetic number, because the mean of its divisors is an integer number (43672971).

Almost surely, 2^145576565 is an apocalyptic number.

It is an amenable number.

145576565 is a deficient number, since it is larger than the sum of its proper divisors (29115319).

145576565 is an equidigital number, since it uses as much as digits as its factorization.

145576565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29115318.

The product of its digits is 630000, while the sum is 44.

The square root of 145576565 is about 12065.5113857640. The cubic root of 145576565 is about 526.0541962017.

The spelling of 145576565 in words is "one hundred forty-five million, five hundred seventy-six thousand, five hundred sixty-five".