145585441 has 2 divisors, whose sum is σ = 145585442. Its totient is φ = 145585440.

The previous prime is 145585421. The next prime is 145585459. The reversal of 145585441 is 144585541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78411025 + 67174416 = 8855^2 + 8196^2 .

It is an emirp because it is prime and its reverse (144585541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145585441 - 2⁷ = 145585313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145585441.

It is not a weakly prime, because it can be changed into another prime (145585421) 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 as a sum of consecutive naturals, namely, 72792720 + 72792721.

It is an arithmetic number, because the mean of its divisors is an integer number (72792721).

Almost surely, 2^145585441 is an apocalyptic number.

It is an amenable number.

145585441 is a deficient number, since it is larger than the sum of its proper divisors (1).

145585441 is an equidigital number, since it uses as much as digits as its factorization.

145585441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64000, while the sum is 37.

The square root of 145585441 is about 12065.8792054288. The cubic root of 145585441 is about 526.0648873963.

The spelling of 145585441 in words is "one hundred forty-five million, five hundred eighty-five thousand, four hundred forty-one".