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52165144 = 2353123031
BaseRepresentation
bin1100011011111…
…1101000011000
310122011021010101
43012333220120
5101323241034
65102025144
71202252653
oct306775030
9118137111
1052165144
112749a499
12155781b4
13aa65a65
146cdc89a
1548a6514
hex31bfa18

52165144 has 16 divisors (see below), whose sum is σ = 99655920. Its totient is φ = 25590240.

The previous prime is 52165109. The next prime is 52165147. The reversal of 52165144 is 44156125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52165147) 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, 61092 + ... + 61939.

It is an arithmetic number, because the mean of its divisors is an integer number (6228495).

Almost surely, 252165144 is an apocalyptic number.

It is an amenable number.

52165144 is a deficient number, since it is larger than the sum of its proper divisors (47490776).

52165144 is a wasteful number, since it uses less digits than its factorization.

52165144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123090 (or 123086 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 52165144 is about 7222.5441500900. The cubic root of 52165144 is about 373.6458275015.

The spelling of 52165144 in words is "fifty-two million, one hundred sixty-five thousand, one hundred forty-four".

Divisors: 1 2 4 8 53 106 212 424 123031 246062 492124 984248 6520643 13041286 26082572 52165144