145235441 has 4 divisors (see below), whose sum is σ = 156407412. Its totient is φ = 134063472.

The previous prime is 145235429. The next prime is 145235473. The reversal of 145235441 is 144532541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144532541 = 4931 ⋅29311.

It can be written as a sum of positive squares in 2 ways, for example, as 51552400 + 93683041 = 7180^2 + 9679^2 .

It is a cyclic number.

It is not a de Polignac number, because 145235441 - 2¹⁴ = 145219057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145235141) 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 3 ways as a sum of consecutive naturals, for example, 5585966 + ... + 5585991.

It is an arithmetic number, because the mean of its divisors is an integer number (39101853).

Almost surely, 2^145235441 is an apocalyptic number.

It is an amenable number.

145235441 is a deficient number, since it is larger than the sum of its proper divisors (11171971).

145235441 is a wasteful number, since it uses less digits than its factorization.

145235441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11171970.

The product of its digits is 9600, while the sum is 29.

The square root of 145235441 is about 12051.3667689603. The cubic root of 145235441 is about 525.6429806093.

Adding to 145235441 its reverse (144532541), we get a palindrome (289767982).

The spelling of 145235441 in words is "one hundred forty-five million, two hundred thirty-five thousand, four hundred forty-one".