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51107148 = 22321419643
BaseRepresentation
bin1100001011110…
…1010101001100
310120011111211100
43002331111030
5101040412043
65023223100
71160255301
oct302752514
9116144740
1051107148
1126937614
1215147a90
13a785321
146b050a8
154747cd3
hex30bd54c

51107148 has 18 divisors (see below), whose sum is σ = 129187604. Its totient is φ = 17035704.

The previous prime is 51107143. The next prime is 51107171. The reversal of 51107148 is 84170115.

51107148 is a `hidden beast` number, since 511 + 0 + 7 + 148 = 666.

51107148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×511071482 = 5223881153387808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51107143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 709786 + ... + 709857.

Almost surely, 251107148 is an apocalyptic number.

It is an amenable number.

51107148 is an abundant number, since it is smaller than the sum of its proper divisors (78080456).

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

51107148 is a wasteful number, since it uses less digits than its factorization.

51107148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419653 (or 1419648 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 51107148 is about 7148.9263529568. The cubic root of 51107148 is about 371.1025016894.

The spelling of 51107148 in words is "fifty-one million, one hundred seven thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 1419643 2839286 4258929 5678572 8517858 12776787 17035716 25553574 51107148