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105200801 = 1031021367
BaseRepresentation
bin1100100010100…
…11110010100001
321022221202100222
412101103302201
5203412411201
614234452425
72415122606
oct621236241
9238852328
10105200801
1154423a12
122b294115
1318a44ac4
14dd866ad
15938091b
hex6453ca1

105200801 has 4 divisors (see below), whose sum is σ = 106222272. Its totient is φ = 104179332.

The previous prime is 105200779. The next prime is 105200803. The reversal of 105200801 is 108002501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-105200801 is a prime.

It is a super-2 number, since 2×1052008012 = 22134417062083202, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 105200801.

It is not an unprimeable number, because it can be changed into a prime (105200803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510581 + ... + 510786.

It is an arithmetic number, because the mean of its divisors is an integer number (26555568).

Almost surely, 2105200801 is an apocalyptic number.

It is an amenable number.

105200801 is a deficient number, since it is larger than the sum of its proper divisors (1021471).

105200801 is a wasteful number, since it uses less digits than its factorization.

105200801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021470.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 105200801 is about 10256.7441715195. The cubic root of 105200801 is about 472.0699422949.

The spelling of 105200801 in words is "one hundred five million, two hundred thousand, eight hundred one".

Divisors: 1 103 1021367 105200801