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1123555201 is a prime number
BaseRepresentation
bin100001011111000…
…0001011110000001
32220022011111222121
41002332001132001
54300112231301
6303253404241
736562030066
oct10276013601
92808144877
101123555201
1152724371a
12274339681
1314ba0a382
14a9310c6d
156898a3a1
hex42f81781

1123555201 has 2 divisors, whose sum is σ = 1123555202. Its totient is φ = 1123555200.

The previous prime is 1123555187. The next prime is 1123555243. The reversal of 1123555201 is 1025553211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 646176400 + 477378801 = 25420^2 + 21849^2 .

It is an emirp because it is prime and its reverse (1025553211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123555201 - 29 = 1123554689 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123555261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561777600 + 561777601.

It is an arithmetic number, because the mean of its divisors is an integer number (561777601).

Almost surely, 21123555201 is an apocalyptic number.

It is an amenable number.

1123555201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123555201 is an equidigital number, since it uses as much as digits as its factorization.

1123555201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1123555201 is about 33519.4749511385. The cubic root of 1123555201 is about 1039.5964907138.

The spelling of 1123555201 in words is "one billion, one hundred twenty-three million, five hundred fifty-five thousand, two hundred one".