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51007027 = 291758863
BaseRepresentation
bin1100001010010…
…0111000110011
310112222102111011
43002210320303
5101024211102
65021131351
71156360351
oct302447063
9115872434
1051007027
1126879375
12150b9b57
13a74b896
146aba7d1
1547282d7
hex30a4e33

51007027 has 4 divisors (see below), whose sum is σ = 52765920. Its totient is φ = 49248136.

The previous prime is 51006983. The next prime is 51007063. The reversal of 51007027 is 72070015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72070015 = 514414003.

It is a cyclic number.

It is not a de Polignac number, because 51007027 - 211 = 51004979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51006989 and 51007007.

It is not an unprimeable number, because it can be changed into a prime (51007087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879403 + ... + 879460.

It is an arithmetic number, because the mean of its divisors is an integer number (13191480).

Almost surely, 251007027 is an apocalyptic number.

51007027 is a deficient number, since it is larger than the sum of its proper divisors (1758893).

51007027 is a wasteful number, since it uses less digits than its factorization.

51007027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758892.

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 51007027 is about 7141.9204000045. The cubic root of 51007027 is about 370.8600082595.

The spelling of 51007027 in words is "fifty-one million, seven thousand, twenty-seven".

Divisors: 1 29 1758863 51007027