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52155284 = 22112911549
BaseRepresentation
bin1100011011110…
…1001110010100
310122010202121012
43012331032110
5101322432114
65101511352
71202212136
oct306751624
9118122535
1052155284
1127493045
1215572558
13aa6141c
146cd9056
1548a363e
hex31bd394

52155284 has 12 divisors (see below), whose sum is σ = 91360500. Its totient is φ = 26052288.

The previous prime is 52155281. The next prime is 52155287. The reversal of 52155284 is 48255125.

It is an interprime number because it is at equal distance from previous prime (52155281) and next prime (52155287).

It can be written as a sum of positive squares in 2 ways, for example, as 28922884 + 23232400 = 5378^2 + 4820^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 52155284.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52155281) 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, 1259 + ... + 10290.

It is an arithmetic number, because the mean of its divisors is an integer number (7613375).

Almost surely, 252155284 is an apocalyptic number.

It is an amenable number.

52155284 is a deficient number, since it is larger than the sum of its proper divisors (39205216).

52155284 is a wasteful number, since it uses less digits than its factorization.

52155284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12682 (or 12680 counting only the distinct ones).

The product of its digits is 16000, while the sum is 32.

The square root of 52155284 is about 7221.8615328736. The cubic root of 52155284 is about 373.6222844501.

The spelling of 52155284 in words is "fifty-two million, one hundred fifty-five thousand, two hundred eighty-four".

Divisors: 1 2 4 1129 2258 4516 11549 23098 46196 13038821 26077642 52155284