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252502285 = 5731409569
BaseRepresentation
bin11110000110011…
…10000100001101
3122121010110000111
433003032010031
51004120033120
641020000021
76154143160
oct1703160415
9577113014
10252502285
1111a592782
1270690011
134040a649
142576bad7
151727a75a
hexf0ce10d

252502285 has 32 divisors (see below), whose sum is σ = 358963200. Its totient is φ = 166855680.

The previous prime is 252502279. The next prime is 252502331. The reversal of 252502285 is 582205252.

It is not a de Polignac number, because 252502285 - 25 = 252502253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 443481 + ... + 444049.

It is an arithmetic number, because the mean of its divisors is an integer number (11217600).

Almost surely, 2252502285 is an apocalyptic number.

It is an amenable number.

252502285 is a deficient number, since it is larger than the sum of its proper divisors (106460915).

252502285 is a wasteful number, since it uses less digits than its factorization.

252502285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021.

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 252502285 is about 15890.3204813496. The cubic root of 252502285 is about 632.0553390161.

The spelling of 252502285 in words is "two hundred fifty-two million, five hundred two thousand, two hundred eighty-five".

Divisors: 1 5 7 31 35 155 217 409 569 1085 2045 2845 2863 3983 12679 14315 17639 19915 63395 88195 88753 123473 232721 443765 617365 1163605 1629047 7214351 8145235 36071755 50500457 252502285