Search a number
-
+
51803136 = 2103271173
BaseRepresentation
bin1100010110011…
…1010000000000
310121110212112200
43011213100000
5101230200021
65050153200
71166214360
oct305472000
9117425480
1051803136
1127272510
1215422800
13a96a058
146c469a0
154834126
hex3167400

51803136 has 264 divisors, whose sum is σ = 189044544. Its totient is φ = 13271040.

The previous prime is 51803119. The next prime is 51803149. The reversal of 51803136 is 63130815.

It is a tau number, because it is divible by the number of its divisors (264).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 709596 + ... + 709668.

Almost surely, 251803136 is an apocalyptic number.

51803136 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51803136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94522272).

51803136 is an abundant number, since it is smaller than the sum of its proper divisors (137241408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51803136 is a wasteful number, since it uses less digits than its factorization.

51803136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 51803136 is about 7197.4395447270. The cubic root of 51803136 is about 372.7794962536.

The spelling of 51803136 in words is "fifty-one million, eight hundred three thousand, one hundred thirty-six".