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52257141 = 325806349
BaseRepresentation
bin1100011101011…
…0000101110101
310122022221022200
43013112011311
5101334212031
65104015113
71203115116
oct307260565
9118287280
1052257141
1127552622
1215601499
13aa988b1
146d2420d
1548c38e6
hex31d6175

52257141 has 6 divisors (see below), whose sum is σ = 75482550. Its totient is φ = 34838088.

The previous prime is 52257137. The next prime is 52257187. The reversal of 52257141 is 14175225.

52257141 is a `hidden beast` number, since 52 + 2 + 571 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51408900 + 848241 = 7170^2 + 921^2 .

It is not a de Polignac number, because 52257141 - 22 = 52257137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52257941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2903166 + ... + 2903183.

It is an arithmetic number, because the mean of its divisors is an integer number (12580425).

Almost surely, 252257141 is an apocalyptic number.

It is an amenable number.

52257141 is a deficient number, since it is larger than the sum of its proper divisors (23225409).

52257141 is a wasteful number, since it uses less digits than its factorization.

52257141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5806355 (or 5806352 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 52257141 is about 7228.9100838231. The cubic root of 52257141 is about 373.8653489747.

The spelling of 52257141 in words is "fifty-two million, two hundred fifty-seven thousand, one hundred forty-one".

Divisors: 1 3 9 5806349 17419047 52257141