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51418801 = 7312111123
BaseRepresentation
bin1100010000100…
…1011010110001
310120202100100001
43010021122301
5101130400201
65034030001
71163024020
oct304113261
9116670301
1051418801
112702a785
1215278301
13a864135
146b868b7
1547aa301
hex31096b1

51418801 has 16 divisors (see below), whose sum is σ = 61001728. Its totient is φ = 42411600.

The previous prime is 51418793. The next prime is 51418817. The reversal of 51418801 is 10881415.

It is not a de Polignac number, because 51418801 - 23 = 51418793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51418801.

It is not an unprimeable number, because it can be changed into a prime (51418831) 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, 45226 + ... + 46348.

It is an arithmetic number, because the mean of its divisors is an integer number (3812608).

Almost surely, 251418801 is an apocalyptic number.

It is an amenable number.

51418801 is a deficient number, since it is larger than the sum of its proper divisors (9582927).

51418801 is a wasteful number, since it uses less digits than its factorization.

51418801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372.

The product of its (nonzero) digits is 1280, while the sum is 28.

The square root of 51418801 is about 7170.6904130634. The cubic root of 51418801 is about 371.8553051359.

The spelling of 51418801 in words is "fifty-one million, four hundred eighteen thousand, eight hundred one".

Divisors: 1 7 31 211 217 1123 1477 6541 7861 34813 45787 236953 243691 1658671 7345543 51418801