145105444 has 24 divisors (see below), whose sum is σ = 286574400. Its totient is φ = 63682080.

The previous prime is 145105439. The next prime is 145105481. The reversal of 145105444 is 444501541.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55584 + ... + 58135.

It is an arithmetic number, because the mean of its divisors is an integer number (11940600).

Almost surely, 2^145105444 is an apocalyptic number.

It is an amenable number.

145105444 is a deficient number, since it is larger than the sum of its proper divisors (141468956).

145105444 is a wasteful number, since it uses less digits than its factorization.

145105444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113763 (or 113761 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 145105444 is about 12045.9721068912. The cubic root of 145105444 is about 525.4861033629.

Adding to 145105444 its reverse (444501541), we get a palindrome (589606985).

The spelling of 145105444 in words is "one hundred forty-five million, one hundred five thousand, four hundred forty-four".