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52389169 = 725312957
BaseRepresentation
bin1100011111011…
…0010100110001
310122120122102121
43013312110301
5101402423134
65110514241
71204205050
oct307662461
9118518377
1052389169
1127632838
1215665981
13ab13a11
146d5a397
1548ecab4
hex31f6531

52389169 has 8 divisors (see below), whose sum is σ = 59917248. Its totient is φ = 44872080.

The previous prime is 52389133. The next prime is 52389187. The reversal of 52389169 is 96198325.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 52389169 - 27 = 52389041 is a prime.

It is a super-2 number, since 2×523891692 = 5489250057021122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52389569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16239 + ... + 19195.

It is an arithmetic number, because the mean of its divisors is an integer number (7489656).

Almost surely, 252389169 is an apocalyptic number.

It is an amenable number.

52389169 is a deficient number, since it is larger than the sum of its proper divisors (7528079).

52389169 is a wasteful number, since it uses less digits than its factorization.

52389169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5495.

The product of its digits is 116640, while the sum is 43.

The square root of 52389169 is about 7238.0362668337. The cubic root of 52389169 is about 374.1799419124.

The spelling of 52389169 in words is "fifty-two million, three hundred eighty-nine thousand, one hundred sixty-nine".

Divisors: 1 7 2531 2957 17717 20699 7484167 52389169