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51033138 = 23133717683
BaseRepresentation
bin1100001010101…
…1010000110010
310120000202022020
43002223100302
5101031030023
65021452310
71156526442
oct302532062
9116022266
1051033138
1126896a52
1215111096
13a75a730
146ac6122
154730de3
hex30ab432

51033138 has 32 divisors (see below), whose sum is σ = 112894656. Its totient is φ = 15277248.

The previous prime is 51033137. The next prime is 51033187. The reversal of 51033138 is 83133015.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51033137) 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 15 ways as a sum of consecutive naturals, for example, 5956 + ... + 11727.

It is an arithmetic number, because the mean of its divisors is an integer number (3527958).

Almost surely, 251033138 is an apocalyptic number.

51033138 is an abundant number, since it is smaller than the sum of its proper divisors (61861518).

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

51033138 is a wasteful number, since it uses less digits than its factorization.

51033138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17738.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 51033138 is about 7143.7481758528. The cubic root of 51033138 is about 370.9232797624.

The spelling of 51033138 in words is "fifty-one million, thirty-three thousand, one hundred thirty-eight".

Divisors: 1 2 3 6 13 26 37 39 74 78 111 222 481 962 1443 2886 17683 35366 53049 106098 229879 459758 654271 689637 1308542 1379274 1962813 3925626 8505523 17011046 25516569 51033138