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52097385 = 354773897
BaseRepresentation
bin1100011010111…
…1000101101001
310122000211011210
43012233011221
5101314104020
65100343333
71201551264
oct306570551
9118024153
1052097385
112745359a
1215544b49
13aa40c72
146cc1cdb
1548913e0
hex31af169

52097385 has 16 divisors (see below), whose sum is σ = 85130496. Its totient is φ = 27193728.

The previous prime is 52097363. The next prime is 52097387. The reversal of 52097385 is 58379025.

It is not a de Polignac number, because 52097385 - 212 = 52093289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52097387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36244 + ... + 37653.

It is an arithmetic number, because the mean of its divisors is an integer number (5320656).

Almost surely, 252097385 is an apocalyptic number.

It is an amenable number.

52097385 is a deficient number, since it is larger than the sum of its proper divisors (33033111).

52097385 is a wasteful number, since it uses less digits than its factorization.

52097385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73952.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 52097385 is about 7217.8518272406. The cubic root of 52097385 is about 373.4839771696.

The spelling of 52097385 in words is "fifty-two million, ninety-seven thousand, three hundred eighty-five".

Divisors: 1 3 5 15 47 141 235 705 73897 221691 369485 1108455 3473159 10419477 17365795 52097385