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51040244 = 22411392239
BaseRepresentation
bin1100001010110…
…0111111110100
310120001010001102
43002230333310
5101031241434
65021545232
71156556243
oct302547764
9116033042
1051040244
11268a1322
1215115218
13a760a38
146ac895a
15473307e
hex30acff4

51040244 has 24 divisors (see below), whose sum is σ = 92198400. Its totient is φ = 24707520.

The previous prime is 51040217. The next prime is 51040259. The reversal of 51040244 is 44204015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21677 + ... + 23915.

It is an arithmetic number, because the mean of its divisors is an integer number (3841600).

Almost surely, 251040244 is an apocalyptic number.

It is an amenable number.

51040244 is a deficient number, since it is larger than the sum of its proper divisors (41158156).

51040244 is a wasteful number, since it uses less digits than its factorization.

51040244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423 (or 2421 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 51040244 is about 7144.2455164979. The cubic root of 51040244 is about 370.9404951026.

Adding to 51040244 its reverse (44204015), we get a palindrome (95244259).

The spelling of 51040244 in words is "fifty-one million, forty thousand, two hundred forty-four".