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102538801 = 192284041
BaseRepresentation
bin1100001110010…
…01111000110001
321010221111210101
412013021320301
5202222220201
614101432401
72353364641
oct607117061
9233844711
10102538801
1152975a12
122a40b701
1318322261
14d892521
159006d01
hex61c9e31

102538801 has 6 divisors (see below), whose sum is σ = 108220002. Its totient is φ = 97141680.

The previous prime is 102538759. The next prime is 102538811. The reversal of 102538801 is 108835201.

It can be written as a sum of positive squares in only one way, i.e., 88811776 + 13727025 = 9424^2 + 3705^2 .

It is not a de Polignac number, because 102538801 - 27 = 102538673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102538801.

It is not an unprimeable number, because it can be changed into a prime (102538811) 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, 141660 + ... + 142381.

It is an arithmetic number, because the mean of its divisors is an integer number (18036667).

Almost surely, 2102538801 is an apocalyptic number.

It is an amenable number.

102538801 is a deficient number, since it is larger than the sum of its proper divisors (5681201).

102538801 is an equidigital number, since it uses as much as digits as its factorization.

102538801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284079 (or 284060 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 102538801 is about 10126.1444291497. The cubic root of 102538801 is about 468.0541263158.

The spelling of 102538801 in words is "one hundred two million, five hundred thirty-eight thousand, eight hundred one".

Divisors: 1 19 361 284041 5396779 102538801