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52207237 = 257203141
BaseRepresentation
bin1100011100100…
…1111010000101
310122020101212101
43013021322011
5101331112422
65102552101
71202516455
oct307117205
9118211771
1052207237
1127519085
1215598631
13aa7bc74
146d0dd65
1548b3c27
hex31c9e85

52207237 has 4 divisors (see below), whose sum is σ = 52410636. Its totient is φ = 52003840.

The previous prime is 52207213. The next prime is 52207273. The reversal of 52207237 is 73270225.

52207237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49999041 + 2208196 = 7071^2 + 1486^2 .

It is a cyclic number.

It is not a de Polignac number, because 52207237 - 211 = 52205189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52207297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101314 + ... + 101827.

It is an arithmetic number, because the mean of its divisors is an integer number (13102659).

Almost surely, 252207237 is an apocalyptic number.

It is an amenable number.

52207237 is a deficient number, since it is larger than the sum of its proper divisors (203399).

52207237 is a wasteful number, since it uses less digits than its factorization.

52207237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203398.

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 52207237 is about 7225.4575633658. The cubic root of 52207237 is about 373.7463010115.

The spelling of 52207237 in words is "fifty-two million, two hundred seven thousand, two hundred thirty-seven".

Divisors: 1 257 203141 52207237