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51348005 = 512780863
BaseRepresentation
bin1100001111100…
…0001000100101
310120121202012222
43003320020211
5101121114010
65032322125
71162310432
oct303701045
9116552188
1051348005
1126a91575
1215243345
13a83ab47
146b68b89
154794355
hex30f8225

51348005 has 8 divisors (see below), whose sum is σ = 62103552. Its totient is φ = 40754448.

The previous prime is 51348001. The next prime is 51348023. The reversal of 51348005 is 50084315.

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 51348005 - 22 = 51348001 is a prime.

It is a super-3 number, since 3×513480053 (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51348001) 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, 39797 + ... + 41066.

It is an arithmetic number, because the mean of its divisors is an integer number (7762944).

Almost surely, 251348005 is an apocalyptic number.

It is an amenable number.

51348005 is a deficient number, since it is larger than the sum of its proper divisors (10755547).

51348005 is a wasteful number, since it uses less digits than its factorization.

51348005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80995.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 51348005 is about 7165.7522284824. The cubic root of 51348005 is about 371.6845637003.

The spelling of 51348005 in words is "fifty-one million, three hundred forty-eight thousand, five".

Divisors: 1 5 127 635 80863 404315 10269601 51348005