253218871 has 8 divisors (see below), whose sum is σ = 266872320. Its totient is φ = 239598072.

The previous prime is 253218781. The next prime is 253218887. The reversal of 253218871 is 178812352.

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

It is a cyclic number.

It is not a de Polignac number, because 253218871 - 2⁷ = 253218743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253218871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253218671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8676 + ... + 24118.

It is an arithmetic number, because the mean of its divisors is an integer number (33359040).

Almost surely, 2^253218871 is an apocalyptic number.

253218871 is a deficient number, since it is larger than the sum of its proper divisors (13653449).

253218871 is a wasteful number, since it uses less digits than its factorization.

253218871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16325.

The product of its digits is 26880, while the sum is 37.

The square root of 253218871 is about 15912.8523841579. The cubic root of 253218871 is about 632.6526857245.

The spelling of 253218871 in words is "two hundred fifty-three million, two hundred eighteen thousand, eight hundred seventy-one".