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51413230 = 25112971227
BaseRepresentation
bin1100010000100…
…0000011101110
310120202001200201
43010020003232
5101130210410
65033544114
71163001541
oct304100356
9116661621
1051413230
1127026580
121527503a
13a86173b
146b84858
1547a883a
hex31080ee

51413230 has 64 divisors (see below), whose sum is σ = 106375680. Its totient is φ = 17718400.

The previous prime is 51413227. The next prime is 51413269. The reversal of 51413230 is 3231415.

It is a junction number, because it is equal to n+sod(n) for n = 51413198 and 51413207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 226377 + ... + 226603.

It is an arithmetic number, because the mean of its divisors is an integer number (1662120).

Almost surely, 251413230 is an apocalyptic number.

51413230 is an abundant number, since it is smaller than the sum of its proper divisors (54962450).

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

51413230 is a wasteful number, since it uses less digits than its factorization.

51413230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 51413230 is about 7170.3019462223. The cubic root of 51413230 is about 371.8418750242.

Adding to 51413230 its reverse (3231415), we get a palindrome (54644645).

The spelling of 51413230 in words is "fifty-one million, four hundred thirteen thousand, two hundred thirty".

Divisors: 1 2 5 10 11 22 29 55 58 71 110 142 145 227 290 319 355 454 638 710 781 1135 1562 1595 2059 2270 2497 3190 3905 4118 4994 6583 7810 10295 12485 13166 16117 20590 22649 24970 32234 32915 45298 65830 72413 80585 113245 144826 161170 177287 226490 354574 362065 467393 724130 886435 934786 1772870 2336965 4673930 5141323 10282646 25706615 51413230