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105144409 is a prime number
BaseRepresentation
bin1100100010001…
…10000001011001
321022211220000101
412101012001121
5203404110114
614233335401
72414466316
oct621060131
9238756011
10105144409
1154395607
122b267561
1318a25236
14dd6dd0d
15936dd74
hex6446059

105144409 has 2 divisors, whose sum is σ = 105144410. Its totient is φ = 105144408.

The previous prime is 105144379. The next prime is 105144427. The reversal of 105144409 is 904441501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98565184 + 6579225 = 9928^2 + 2565^2 .

It is a cyclic number.

It is not a de Polignac number, because 105144409 - 29 = 105143897 is a prime.

It is a super-2 number, since 2×1051444092 = 22110693487918562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105144469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52572204 + 52572205.

It is an arithmetic number, because the mean of its divisors is an integer number (52572205).

Almost surely, 2105144409 is an apocalyptic number.

It is an amenable number.

105144409 is a deficient number, since it is larger than the sum of its proper divisors (1).

105144409 is an equidigital number, since it uses as much as digits as its factorization.

105144409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 105144409 is about 10253.9947825226. The cubic root of 105144409 is about 471.9855775182.

The spelling of 105144409 in words is "one hundred five million, one hundred forty-four thousand, four hundred nine".