253105555503 has 8 divisors (see below), whose sum is σ = 339901945600. Its totient is φ = 167523101208.

The previous prime is 253105555457. The next prime is 253105555511. The reversal of 253105555503 is 305555501352.

253105555503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 253105555503 - 2⁹ = 253105554991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253105555523) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 303483463 + ... + 303484296.

It is an arithmetic number, because the mean of its divisors is an integer number (42487743200).

Almost surely, 2^253105555503 is an apocalyptic number.

253105555503 is a deficient number, since it is larger than the sum of its proper divisors (86796390097).

253105555503 is a wasteful number, since it uses less digits than its factorization.

253105555503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606967901.

The product of its (nonzero) digits is 281250, while the sum is 39.

The spelling of 253105555503 in words is "two hundred fifty-three billion, one hundred five million, five hundred fifty-five thousand, five hundred three".