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52155885 = 3523314923
BaseRepresentation
bin1100011011110…
…1010111101101
310122010210102110
43012331113231
5101322442020
65101514233
71202213655
oct306752755
9118123373
1052155885
1127493541
1215572979
13aa61792
146cd9365
1548a38e0
hex31bd5ed

52155885 has 16 divisors (see below), whose sum is σ = 83813184. Its totient is φ = 27695232.

The previous prime is 52155841. The next prime is 52155889. The reversal of 52155885 is 58855125.

It is not a de Polignac number, because 52155885 - 26 = 52155821 is a prime.

It is a super-3 number, since 3×521558853 (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52155889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3967 + ... + 10956.

It is an arithmetic number, because the mean of its divisors is an integer number (5238324).

Almost surely, 252155885 is an apocalyptic number.

It is an amenable number.

52155885 is a deficient number, since it is larger than the sum of its proper divisors (31657299).

52155885 is a wasteful number, since it uses less digits than its factorization.

52155885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15164.

The product of its digits is 80000, while the sum is 39.

The square root of 52155885 is about 7221.9031425241. The cubic root of 52155885 is about 373.6237195628.

The spelling of 52155885 in words is "fifty-two million, one hundred fifty-five thousand, eight hundred eighty-five".

Divisors: 1 3 5 15 233 699 1165 3495 14923 44769 74615 223845 3477059 10431177 17385295 52155885