253445321455 has 16 divisors (see below), whose sum is σ = 320753646720. Its totient is φ = 191717562528.

The previous prime is 253445321443. The next prime is 253445321473. The reversal of 253445321455 is 554123544352.

253445321455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 253445321455 - 2¹⁹ = 253444797167 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2500837 + ... + 2600206.

It is an arithmetic number, because the mean of its divisors is an integer number (20047102920).

Almost surely, 2^253445321455 is an apocalyptic number.

253445321455 is a deficient number, since it is larger than the sum of its proper divisors (67308325265).

253445321455 is a wasteful number, since it uses less digits than its factorization.

253445321455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5101590.

The product of its digits is 1440000, while the sum is 43.

The spelling of 253445321455 in words is "two hundred fifty-three billion, four hundred forty-five million, three hundred twenty-one thousand, four hundred fifty-five".