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2181359 is a prime number
BaseRepresentation
bin1000010100100011101111
311002211021002
420110203233
51024300414
6114430515
724353435
oct10244357
94084232
102181359
11125a984
1289243b
135b4b5b
1440ad55
152d14de
hex2148ef

2181359 has 2 divisors, whose sum is σ = 2181360. Its totient is φ = 2181358.

The previous prime is 2181349. The next prime is 2181373. The reversal of 2181359 is 9531812.

2181359 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2181359 - 216 = 2115823 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2181329) 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, 1090679 + 1090680.

It is an arithmetic number, because the mean of its divisors is an integer number (1090680).

22181359 is an apocalyptic number.

2181359 is a deficient number, since it is larger than the sum of its proper divisors (1).

2181359 is an equidigital number, since it uses as much as digits as its factorization.

2181359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 29.

The square root of 2181359 is about 1476.9424497928. The cubic root of 2181359 is about 129.6907640055.

The spelling of 2181359 in words is "two million, one hundred eighty-one thousand, three hundred fifty-nine".