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52287252 = 2234357271
BaseRepresentation
bin1100011101110…
…1011100010100
310122101110121220
43013131130110
5101341143002
65104410340
71203301653
oct307353424
9118343556
1052287252
1127573206
12156169b0
13aaa9504
146d3119a
1548cc7bc
hex31dd714

52287252 has 12 divisors (see below), whose sum is σ = 122003616. Its totient is φ = 17429080.

The previous prime is 52287251. The next prime is 52287271. The reversal of 52287252 is 25278225.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52287251) 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, 2178624 + ... + 2178647.

It is an arithmetic number, because the mean of its divisors is an integer number (10166968).

Almost surely, 252287252 is an apocalyptic number.

It is an amenable number.

52287252 is an abundant number, since it is smaller than the sum of its proper divisors (69716364).

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

52287252 is a wasteful number, since it uses less digits than its factorization.

52287252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4357278 (or 4357276 counting only the distinct ones).

The product of its digits is 22400, while the sum is 33.

The square root of 52287252 is about 7230.9924630026. The cubic root of 52287252 is about 373.9371432966.

The spelling of 52287252 in words is "fifty-two million, two hundred eighty-seven thousand, two hundred fifty-two".

Divisors: 1 2 3 4 6 12 4357271 8714542 13071813 17429084 26143626 52287252