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52166031 = 3107163997
BaseRepresentation
bin1100011011111…
…1110110001111
310122011022100020
43012333312033
5101323303111
65102033223
71202255361
oct306776617
9118138306
1052166031
11274a0125
1215578813
13aa66298
146cdcd31
1548a6906
hex31bfd8f

52166031 has 16 divisors (see below), whose sum is σ = 70706304. Its totient is φ = 34206624.

The previous prime is 52166027. The next prime is 52166053. The reversal of 52166031 is 13066125.

It is not a de Polignac number, because 52166031 - 22 = 52166027 is a prime.

It is a super-2 number, since 2×521660312 = 5442589580585922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52165992 and 52166010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52166011) 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, 51825 + ... + 52821.

It is an arithmetic number, because the mean of its divisors is an integer number (4419144).

Almost surely, 252166031 is an apocalyptic number.

52166031 is a deficient number, since it is larger than the sum of its proper divisors (18540273).

52166031 is a wasteful number, since it uses less digits than its factorization.

52166031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 52166031 is about 7222.6055547842. The cubic root of 52166031 is about 373.6479452756.

The spelling of 52166031 in words is "fifty-two million, one hundred sixty-six thousand, thirty-one".

Divisors: 1 3 107 163 321 489 997 2991 17441 52323 106679 162511 320037 487533 17388677 52166031