253511321055 has 16 divisors (see below), whose sum is σ = 405661476480. Its totient is φ = 135191583648.

The previous prime is 253511321047. The next prime is 253511321059. The reversal of 253511321055 is 550123115352.

It is a happy number.

It is not a de Polignac number, because 253511321055 - 2³ = 253511321047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253511321059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 757645 + ... + 1039734.

It is an arithmetic number, because the mean of its divisors is an integer number (25353842280).

Almost surely, 2^253511321055 is an apocalyptic number.

253511321055 is a deficient number, since it is larger than the sum of its proper divisors (152150155425).

253511321055 is a wasteful number, since it uses less digits than its factorization.

253511321055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806790.

The product of its (nonzero) digits is 22500, while the sum is 33.

The spelling of 253511321055 in words is "two hundred fifty-three billion, five hundred eleven million, three hundred twenty-one thousand, fifty-five".