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51676770 = 23517195333
BaseRepresentation
bin1100010100100…
…0011001100010
310121020110012110
43011020121202
5101212124040
65043340150
71165150065
oct305103142
9117213173
1051676770
1127196582
1215381656
13a924692
146c128dc
15480b980
hex3148662

51676770 has 64 divisors (see below), whose sum is σ = 138257280. Its totient is φ = 12284928.

The previous prime is 51676747. The next prime is 51676771. The reversal of 51676770 is 7767615.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51676771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7024 + ... + 12356.

It is an arithmetic number, because the mean of its divisors is an integer number (2160270).

Almost surely, 251676770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51676770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69128640).

51676770 is an abundant number, since it is smaller than the sum of its proper divisors (86580510).

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

51676770 is a wasteful number, since it uses less digits than its factorization.

51676770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5379.

The product of its (nonzero) digits is 61740, while the sum is 39.

The square root of 51676770 is about 7188.6556462248. The cubic root of 51676770 is about 372.4761361827.

The spelling of 51676770 in words is "fifty-one million, six hundred seventy-six thousand, seven hundred seventy".