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51025201 = 239722871
BaseRepresentation
bin1100001010100…
…1010100110001
310120000100102021
43002221110301
5101030301301
65021351441
71156464343
oct302512461
9116010367
1051025201
1126890a97
1215108581
13a756c36
146ac3293
15472d8a1
hex30a9531

51025201 has 8 divisors (see below), whose sum is σ = 53794944. Its totient is φ = 48301440.

The previous prime is 51025187. The next prime is 51025207. The reversal of 51025201 is 10252015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51025201 - 29 = 51024689 is a prime.

It is a super-2 number, since 2×510252012 = 5207142274180802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51025207) 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 7 ways as a sum of consecutive naturals, for example, 9205 + ... + 13666.

It is an arithmetic number, because the mean of its divisors is an integer number (6724368).

Almost surely, 251025201 is an apocalyptic number.

It is an amenable number.

51025201 is a deficient number, since it is larger than the sum of its proper divisors (2769743).

51025201 is a wasteful number, since it uses less digits than its factorization.

51025201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22991.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 51025201 is about 7143.1926335498. The cubic root of 51025201 is about 370.9040493119.

Adding to 51025201 its reverse (10252015), we get a palindrome (61277216).

The spelling of 51025201 in words is "fifty-one million, twenty-five thousand, two hundred one".

Divisors: 1 23 97 2231 22871 526033 2218487 51025201