145595885 has 4 divisors (see below), whose sum is σ = 174715068. Its totient is φ = 116476704.

The previous prime is 145595839. The next prime is 145595899. The reversal of 145595885 is 588595541.

It is a happy number.

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 56595529 + 89000356 = 7523^2 + 9434^2 .

It is a cyclic number.

It is not a de Polignac number, because 145595885 - 2²⁰ = 144547309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 14559584 + ... + 14559593.

It is an arithmetic number, because the mean of its divisors is an integer number (43678767).

Almost surely, 2^145595885 is an apocalyptic number.

It is an amenable number.

145595885 is a deficient number, since it is larger than the sum of its proper divisors (29119183).

145595885 is an equidigital number, since it uses as much as digits as its factorization.

145595885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29119182.

The product of its digits is 1440000, while the sum is 50.

The square root of 145595885 is about 12066.3119883418. The cubic root of 145595885 is about 526.0774666997.

The spelling of 145595885 in words is "one hundred forty-five million, five hundred ninety-five thousand, eight hundred eighty-five".