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51834931 = 331156601
BaseRepresentation
bin1100010110111…
…1000000110011
310121112111011021
43011233000303
5101232204211
65051000311
71166406151
oct305570063
9117474137
1051834931
1127294395
1215439097
13a97b675
146c543d1
15483d771
hex316f033

51834931 has 4 divisors (see below), whose sum is σ = 51991864. Its totient is φ = 51678000.

The previous prime is 51834929. The next prime is 51834943. The reversal of 51834931 is 13943815.

51834931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51834931 - 21 = 51834929 is a prime.

It is a super-2 number, since 2×518349312 = 5373720143549522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51834971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77970 + ... + 78631.

It is an arithmetic number, because the mean of its divisors is an integer number (12997966).

Almost surely, 251834931 is an apocalyptic number.

51834931 is a deficient number, since it is larger than the sum of its proper divisors (156933).

51834931 is a wasteful number, since it uses less digits than its factorization.

51834931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156932.

The product of its digits is 12960, while the sum is 34.

The square root of 51834931 is about 7199.6479775056. The cubic root of 51834931 is about 372.8557471072.

The spelling of 51834931 in words is "fifty-one million, eight hundred thirty-four thousand, nine hundred thirty-one".

Divisors: 1 331 156601 51834931