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1275054061 is a prime number
BaseRepresentation
bin100101111111111…
…1100011111101101
310021212020110100111
41023333330133231
510102403212221
6330304500021
743411531531
oct11377743755
93255213314
101275054061
115a4809a96
122b701a611
13174212578
14c14a9bc1
1576e13be1
hex4bffc7ed

1275054061 has 2 divisors, whose sum is σ = 1275054062. Its totient is φ = 1275054060.

The previous prime is 1275054041. The next prime is 1275054097. The reversal of 1275054061 is 1604505721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 955180836 + 319873225 = 30906^2 + 17885^2 .

It is a cyclic number.

It is not a de Polignac number, because 1275054061 - 25 = 1275054029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1275054041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637527030 + 637527031.

It is an arithmetic number, because the mean of its divisors is an integer number (637527031).

Almost surely, 21275054061 is an apocalyptic number.

It is an amenable number.

1275054061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275054061 is an equidigital number, since it uses as much as digits as its factorization.

1275054061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 1275054061 is about 35707.8991401062. The cubic root of 1275054061 is about 1084.3667681924.

Adding to 1275054061 its reverse (1604505721), we get a palindrome (2879559782).

The spelling of 1275054061 in words is "one billion, two hundred seventy-five million, fifty-four thousand, sixty-one".