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52574285 = 517618521
BaseRepresentation
bin1100100010001…
…1100001001101
310122221001100202
43020203201031
5101424334120
65114503245
71205605541
oct310434115
9118831322
1052574285
1127749925
1215734b25
13ab7a05a
146da7a21
154937875
hex322384d

52574285 has 8 divisors (see below), whose sum is σ = 66800376. Its totient is φ = 39585280.

The previous prime is 52574281. The next prime is 52574287. The reversal of 52574285 is 58247525.

It can be written as a sum of positive squares in 4 ways, for example, as 2758921 + 49815364 = 1661^2 + 7058^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52574285 - 22 = 52574281 is a prime.

It is a super-2 number, since 2×525742852 = 5528110886522450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52574281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309176 + ... + 309345.

It is an arithmetic number, because the mean of its divisors is an integer number (8350047).

Almost surely, 252574285 is an apocalyptic number.

It is an amenable number.

52574285 is a deficient number, since it is larger than the sum of its proper divisors (14226091).

52574285 is a wasteful number, since it uses less digits than its factorization.

52574285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618543.

The product of its digits is 112000, while the sum is 38.

The square root of 52574285 is about 7250.8127130688. The cubic root of 52574285 is about 374.6201427599.

The spelling of 52574285 in words is "fifty-two million, five hundred seventy-four thousand, two hundred eighty-five".

Divisors: 1 5 17 85 618521 3092605 10514857 52574285