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51880202 = 2112214381
BaseRepresentation
bin1100010111101…
…0000100001010
310121121210020222
43011322010022
5101240131302
65051550042
71166655143
oct305720412
9117553228
1051880202
1127315400
121545b322
13a99615a
146c66aca
15484bda2
hex317a10a

51880202 has 12 divisors (see below), whose sum is σ = 85538418. Its totient is φ = 23581800.

The previous prime is 51880201. The next prime is 51880207. The reversal of 51880202 is 20208815.

It can be written as a sum of positive squares in only one way, i.e., 37810201 + 14070001 = 6149^2 + 3751^2 .

It is not an unprimeable number, because it can be changed into a prime (51880201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106949 + ... + 107432.

Almost surely, 251880202 is an apocalyptic number.

51880202 is a deficient number, since it is larger than the sum of its proper divisors (33658216).

51880202 is a wasteful number, since it uses less digits than its factorization.

51880202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214405 (or 214394 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 51880202 is about 7202.7912645029. The cubic root of 51880202 is about 372.9642623534.

The spelling of 51880202 in words is "fifty-one million, eight hundred eighty thousand, two hundred two".

Divisors: 1 2 11 22 121 242 214381 428762 2358191 4716382 25940101 51880202