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102105053 = 358128513
BaseRepresentation
bin1100001010111…
…11111111011101
321010010110210122
412011133333131
5202114330203
614044244325
72346610241
oct605377735
9233113718
10102105053
11526aa046
122a2406a5
13181cc9bb
14d7bc421
158e6d538
hex615ffdd

102105053 has 4 divisors (see below), whose sum is σ = 102137148. Its totient is φ = 102072960.

The previous prime is 102105049. The next prime is 102105121. The reversal of 102105053 is 350501201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350501201 = 2331504297.

It can be written as a sum of positive squares in 2 ways, for example, as 94906564 + 7198489 = 9742^2 + 2683^2 .

It is a cyclic number.

It is not a de Polignac number, because 102105053 - 22 = 102105049 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102105953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10676 + ... + 17837.

It is an arithmetic number, because the mean of its divisors is an integer number (25534287).

Almost surely, 2102105053 is an apocalyptic number.

It is an amenable number.

102105053 is a deficient number, since it is larger than the sum of its proper divisors (32095).

102105053 is an equidigital number, since it uses as much as digits as its factorization.

102105053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32094.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 102105053 is about 10104.7044984007. The cubic root of 102105053 is about 467.3932237293.

Adding to 102105053 its reverse (350501201), we get a palindrome (452606254).

The spelling of 102105053 in words is "one hundred two million, one hundred five thousand, fifty-three".

Divisors: 1 3581 28513 102105053