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52056986 = 2137189989
BaseRepresentation
bin1100011010010…
…1001110011010
310121221202202112
43012211032122
5101311310421
65055432322
71201322432
oct306451632
9117852675
1052056986
1127426203
12155256a2
13aa28767
146cb12c2
15488445b
hex31a539a

52056986 has 8 divisors (see below), whose sum is σ = 78655860. Its totient is φ = 25838368.

The previous prime is 52056937. The next prime is 52056989. The reversal of 52056986 is 68965025.

52056986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 46854025 + 5202961 = 6845^2 + 2281^2 .

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

It is a super-3 number, since 3×520569863 (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (52056989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94721 + ... + 95268.

Almost surely, 252056986 is an apocalyptic number.

52056986 is a deficient number, since it is larger than the sum of its proper divisors (26598874).

52056986 is a wasteful number, since it uses less digits than its factorization.

52056986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190128.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 52056986 is about 7215.0527371600. The cubic root of 52056986 is about 373.3874126237.

The spelling of 52056986 in words is "fifty-two million, fifty-six thousand, nine hundred eighty-six".

Divisors: 1 2 137 274 189989 379978 26028493 52056986