253105445 has 16 divisors (see below), whose sum is σ = 308095488. Its totient is φ = 199593600.

The previous prime is 253105427. The next prime is 253105451. The reversal of 253105445 is 544501352.

It is not a de Polignac number, because 253105445 - 2²⁶ = 185996581 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 102212 + ... + 104658.

It is an arithmetic number, because the mean of its divisors is an integer number (19255968).

Almost surely, 2^253105445 is an apocalyptic number.

It is an amenable number.

253105445 is a deficient number, since it is larger than the sum of its proper divisors (54990043).

253105445 is a wasteful number, since it uses less digits than its factorization.

253105445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 253105445 is about 15909.2880104673. The cubic root of 253105445 is about 632.5582088523.

Adding to 253105445 its reverse (544501352), we get a palindrome (797606797).

The spelling of 253105445 in words is "two hundred fifty-three million, one hundred five thousand, four hundred forty-five".