253475568 has 100 divisors (see below), whose sum is σ = 739727208. Its totient is φ = 83790720.

The previous prime is 253475531. The next prime is 253475581. The reversal of 253475568 is 865574352.

253475568 is a `hidden beast` number, since 2 + 53 + 47 + 556 + 8 = 666.

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 19 ways as a sum of consecutive naturals, for example, 169030 + ... + 170522.

Almost surely, 2^253475568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253475568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369863604).

253475568 is an abundant number, since it is smaller than the sum of its proper divisors (486251640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253475568 is a wasteful number, since it uses less digits than its factorization.

253475568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644 (or 1629 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The square root of 253475568 is about 15920.9160540466. The cubic root of 253475568 is about 632.8663943893.

The spelling of 253475568 in words is "two hundred fifty-three million, four hundred seventy-five thousand, five hundred sixty-eight".