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52144625 = 531332089
BaseRepresentation
bin1100011011101…
…0100111110001
310122010012222102
43012322213301
5101322112000
65101350145
71202136101
oct306724761
9118105872
1052144625
1127486035
1215568355
13aa59610
146cd5201
1548a03d5
hex31ba9f1

52144625 has 16 divisors (see below), whose sum is σ = 70084560. Its totient is φ = 38505600.

The previous prime is 52144597. The next prime is 52144643. The reversal of 52144625 is 52644125.

It can be written as a sum of positive squares in 8 ways, for example, as 43138624 + 9006001 = 6568^2 + 3001^2 .

It is not a de Polignac number, because 52144625 - 28 = 52144369 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14420 + ... + 17669.

It is an arithmetic number, because the mean of its divisors is an integer number (4380285).

Almost surely, 252144625 is an apocalyptic number.

It is an amenable number.

52144625 is a deficient number, since it is larger than the sum of its proper divisors (17939935).

52144625 is a wasteful number, since it uses less digits than its factorization.

52144625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32117 (or 32107 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 52144625 is about 7221.1235275406. The cubic root of 52144625 is about 373.5968302618.

Subtracting 52144625 from its reverse (52644125), we obtain a triangular number (499500 = T999).

The spelling of 52144625 in words is "fifty-two million, one hundred forty-four thousand, six hundred twenty-five".

Divisors: 1 5 13 25 65 125 325 1625 32089 160445 417157 802225 2085785 4011125 10428925 52144625