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52187411 = 139375449
BaseRepresentation
bin1100011100010…
…1000100010011
310122012101200002
43013011010103
5101324444121
65102320215
71202404613
oct307050423
9118171602
1052187411
11275051a1
121558906b
13aa72c33
146d06a43
1548ace0b
hex31c5113

52187411 has 4 divisors (see below), whose sum is σ = 52563000. Its totient is φ = 51811824.

The previous prime is 52187381. The next prime is 52187413. The reversal of 52187411 is 11478125.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-52187411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52187413) 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 3 ways as a sum of consecutive naturals, for example, 187586 + ... + 187863.

It is an arithmetic number, because the mean of its divisors is an integer number (13140750).

Almost surely, 252187411 is an apocalyptic number.

52187411 is a deficient number, since it is larger than the sum of its proper divisors (375589).

52187411 is a wasteful number, since it uses less digits than its factorization.

52187411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375588.

The product of its digits is 2240, while the sum is 29.

The square root of 52187411 is about 7224.0854784533. The cubic root of 52187411 is about 373.6989842487.

The spelling of 52187411 in words is "fifty-two million, one hundred eighty-seven thousand, four hundred eleven".

Divisors: 1 139 375449 52187411