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52423155 = 32517229139
BaseRepresentation
bin1100011111111…
…0100111110011
310122122101001100
43013332213303
5101410020110
65111335443
71204406121
oct307764763
9118571040
1052423155
1127656324
1215681583
13ab26325
146d68911
154907bc0
hex31fe9f3

52423155 has 72 divisors (see below), whose sum is σ = 100573200. Its totient is φ = 25224192.

The previous prime is 52423127. The next prime is 52423157. The reversal of 52423155 is 55132425.

It is a happy number.

It is not a de Polignac number, because 52423155 - 27 = 52423027 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52423157) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 377076 + ... + 377214.

It is an arithmetic number, because the mean of its divisors is an integer number (1396850).

Almost surely, 252423155 is an apocalyptic number.

52423155 is a deficient number, since it is larger than the sum of its proper divisors (48150045).

52423155 is a wasteful number, since it uses less digits than its factorization.

52423155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 193 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 52423155 is about 7240.3836224333. The cubic root of 52423155 is about 374.2608373267.

The spelling of 52423155 in words is "fifty-two million, four hundred twenty-three thousand, one hundred fifty-five".

Divisors: 1 3 5 9 15 17 29 45 51 85 87 139 145 153 255 261 289 417 435 493 695 765 867 1251 1305 1445 1479 2085 2363 2465 2601 4031 4335 4437 6255 7089 7395 8381 11815 12093 13005 20155 21267 22185 25143 35445 36279 40171 41905 60465 68527 75429 106335 120513 125715 181395 200855 205581 342635 361539 377145 602565 616743 1027905 1164959 1807695 3083715 3494877 5824795 10484631 17474385 52423155