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11750021 is a prime number
BaseRepresentation
bin101100110100…
…101010000101
3211002221222222
4230310222011
511002000041
61055502125
7201605423
oct54645205
924087888
1011750021
1166a5a68
123b27945
13258529a
1417bc113
15107174b
hexb34a85

11750021 has 2 divisors, whose sum is σ = 11750022. Its totient is φ = 11750020.

The previous prime is 11749993. The next prime is 11750029. The reversal of 11750021 is 12005711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8473921 + 3276100 = 2911^2 + 1810^2 .

It is a cyclic number.

It is not a de Polignac number, because 11750021 - 218 = 11487877 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11750029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5875010 + 5875011.

It is an arithmetic number, because the mean of its divisors is an integer number (5875011).

Almost surely, 211750021 is an apocalyptic number.

It is an amenable number.

11750021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11750021 is an equidigital number, since it uses as much as digits as its factorization.

11750021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70, while the sum is 17.

The square root of 11750021 is about 3427.8303633640. The cubic root of 11750021 is about 227.3419326264.

Adding to 11750021 its reverse (12005711), we get a palindrome (23755732).

The spelling of 11750021 in words is "eleven million, seven hundred fifty thousand, twenty-one".