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51055055 = 5231094073
BaseRepresentation
bin1100001011000…
…0100111001111
310120001212100222
43002300213033
5101032230210
65022141555
71156650362
oct302604717
9116055328
1051055055
1126901467
12151218bb
13a7676bc
146ad00d9
154737655
hex30b09cf

51055055 has 16 divisors (see below), whose sum is σ = 64532160. Its totient is φ = 38700288.

The previous prime is 51055031. The next prime is 51055057. The reversal of 51055055 is 55055015.

51055055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51055055 - 212 = 51050959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51055057) 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 15 ways as a sum of consecutive naturals, for example, 10499 + ... + 14571.

It is an arithmetic number, because the mean of its divisors is an integer number (4033260).

Almost surely, 251055055 is an apocalyptic number.

51055055 is a deficient number, since it is larger than the sum of its proper divisors (13477105).

51055055 is a wasteful number, since it uses less digits than its factorization.

51055055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4210.

The product of its (nonzero) digits is 3125, while the sum is 26.

The square root of 51055055 is about 7145.2820098300. The cubic root of 51055055 is about 370.9763718142.

The spelling of 51055055 in words is "fifty-one million, fifty-five thousand, fifty-five".

Divisors: 1 5 23 109 115 545 2507 4073 12535 20365 93679 443957 468395 2219785 10211011 51055055