253513055 has 4 divisors (see below), whose sum is σ = 304215672. Its totient is φ = 202810440.

The previous prime is 253513031. The next prime is 253513069. The reversal of 253513055 is 550315352.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 253513055 - 2¹⁴ = 253496671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25351301 + ... + 25351310.

It is an arithmetic number, because the mean of its divisors is an integer number (76053918).

Almost surely, 2^253513055 is an apocalyptic number.

253513055 is a deficient number, since it is larger than the sum of its proper divisors (50702617).

253513055 is an equidigital number, since it uses as much as digits as its factorization.

253513055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50702616.

The product of its (nonzero) digits is 11250, while the sum is 29.

The square root of 253513055 is about 15922.0932983072. The cubic root of 253513055 is about 632.8975914698.

The spelling of 253513055 in words is "two hundred fifty-three million, five hundred thirteen thousand, fifty-five".