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51025016 = 237911161
BaseRepresentation
bin1100001010100…
…1010001111000
310120000100011102
43002221101320
5101030300031
65021350532
71156463660
oct302512170
9116010142
1051025016
1126890939
1215108448
13a756b23
146ac31a0
15472d7cb
hex30a9478

51025016 has 16 divisors (see below), whose sum is σ = 109339440. Its totient is φ = 21867840.

The previous prime is 51025003. The next prime is 51025021. The reversal of 51025016 is 61052015.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 455525 + ... + 455636.

It is an arithmetic number, because the mean of its divisors is an integer number (6833715).

Almost surely, 251025016 is an apocalyptic number.

51025016 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51025016 is an abundant number, since it is smaller than the sum of its proper divisors (58314424).

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

51025016 is a wasteful number, since it uses less digits than its factorization.

51025016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911174 (or 911170 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 51025016 is about 7143.1796841463. The cubic root of 51025016 is about 370.9036010541.

The spelling of 51025016 in words is "fifty-one million, twenty-five thousand, sixteen".

Divisors: 1 2 4 7 8 14 28 56 911161 1822322 3644644 6378127 7289288 12756254 25512508 51025016