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55142695 = 538928351
BaseRepresentation
bin1101001001011…
…0100100100111
310211202112120001
43102112210213
5103104031240
65245522131
71236463606
oct322264447
9124675501
1055142695
1129143583
1216573347
13b56911a
147475a3d
154c9389a
hex3496927

55142695 has 8 divisors (see below), whose sum is σ = 66343680. Its totient is φ = 43999200.

The previous prime is 55142687. The next prime is 55142699. The reversal of 55142695 is 59624155.

55142695 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 55142695 - 23 = 55142687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55142699) 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 7 ways as a sum of consecutive naturals, for example, 12231 + ... + 16120.

It is an arithmetic number, because the mean of its divisors is an integer number (8292960).

Almost surely, 255142695 is an apocalyptic number.

55142695 is a deficient number, since it is larger than the sum of its proper divisors (11200985).

55142695 is a wasteful number, since it uses less digits than its factorization.

55142695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28745.

The product of its digits is 54000, while the sum is 37.

The square root of 55142695 is about 7425.8127501305. The cubic root of 55142695 is about 380.6238483019.

The spelling of 55142695 in words is "fifty-five million, one hundred forty-two thousand, six hundred ninety-five".

Divisors: 1 5 389 1945 28351 141755 11028539 55142695