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2105250001 = 41225122811
BaseRepresentation
bin111110101111011…
…1001000011010001
312102201101210002021
41331132321003101
513302421000001
6544522451441
7103112221051
oct17536710321
95381353067
102105250001
119903a4538
124a9063b81
1327720867a
1415d855561
15c4c52ba1
hex7d7b90d1

2105250001 has 8 divisors (see below), whose sum is σ = 2157650208. Its totient is φ = 2052900000.

The previous prime is 2105249987. The next prime is 2105250031. The reversal of 2105250001 is 1000525012.

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

It is a cyclic number.

It is not a de Polignac number, because 2105250001 - 25 = 2105249969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2105250031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80886 + ... + 103696.

It is an arithmetic number, because the mean of its divisors is an integer number (269706276).

Almost surely, 22105250001 is an apocalyptic number.

It is an amenable number.

2105250001 is a deficient number, since it is larger than the sum of its proper divisors (52400207).

2105250001 is a wasteful number, since it uses less digits than its factorization.

2105250001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25103.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 2105250001 is about 45883.0033999519. The cubic root of 2105250001 is about 1281.6454264366.

Adding to 2105250001 its reverse (1000525012), we get a palindrome (3105775013).

The spelling of 2105250001 in words is "two billion, one hundred five million, two hundred fifty thousand, one".

Divisors: 1 41 2251 22811 92291 935251 51347561 2105250001