252871400173 has 4 divisors (see below), whose sum is σ = 288995885920. Its totient is φ = 216746914428.

The previous prime is 252871400161. The next prime is 252871400203. The reversal of 252871400173 is 371004178252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252871400173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252871400153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18062242863 + ... + 18062242876.

It is an arithmetic number, because the mean of its divisors is an integer number (72248971480).

Almost surely, 2^252871400173 is an apocalyptic number.

It is an amenable number.

252871400173 is a deficient number, since it is larger than the sum of its proper divisors (36124485747).

252871400173 is an equidigital number, since it uses as much as digits as its factorization.

252871400173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36124485746.

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 252871400173 in words is "two hundred fifty-two billion, eight hundred seventy-one million, four hundred thousand, one hundred seventy-three".