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252871 = 1913309
BaseRepresentation
bin111101101111000111
3110211212121
4331233013
531042441
65230411
72102143
oct755707
9424777
10252871
11162a93
12102407
138b138
1468223
154edd1
hex3dbc7

252871 has 4 divisors (see below), whose sum is σ = 266200. Its totient is φ = 239544.

The previous prime is 252869. The next prime is 252877. The reversal of 252871 is 178252.

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

It is a cyclic number.

It is not a de Polignac number, because 252871 - 21 = 252869 is a prime.

It is a d-powerful number, because it can be written as 29 + 55 + 83 + 217 + 76 + 1 .

It is a Duffinian number.

252871 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6636 + ... + 6673.

It is an arithmetic number, because the mean of its divisors is an integer number (66550).

2252871 is an apocalyptic number.

252871 is a deficient number, since it is larger than the sum of its proper divisors (13329).

252871 is a wasteful number, since it uses less digits than its factorization.

252871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13328.

The product of its digits is 1120, while the sum is 25.

The square root of 252871 is about 502.8628043512. The cubic root of 252871 is about 63.2362841105.

The spelling of 252871 in words is "two hundred fifty-two thousand, eight hundred seventy-one".

Divisors: 1 19 13309 252871