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194442553 is a prime number
BaseRepresentation
bin10111001011011…
…11010100111001
3111112212201001001
423211233110321
5344234130203
631143325001
74550506624
oct1345572471
9445781031
10194442553
119a837628
1255150761
133138c886
141bb76dbb
151210c91d
hexb96f539

194442553 has 2 divisors, whose sum is σ = 194442554. Its totient is φ = 194442552.

The previous prime is 194442503. The next prime is 194442569. The reversal of 194442553 is 355244491.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192571129 + 1871424 = 13877^2 + 1368^2 .

It is a cyclic number.

It is not a de Polignac number, because 194442553 - 29 = 194442041 is a prime.

It is not a weakly prime, because it can be changed into another prime (194442503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97221276 + 97221277.

It is an arithmetic number, because the mean of its divisors is an integer number (97221277).

Almost surely, 2194442553 is an apocalyptic number.

It is an amenable number.

194442553 is a deficient number, since it is larger than the sum of its proper divisors (1).

194442553 is an equidigital number, since it uses as much as digits as its factorization.

194442553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 37.

The square root of 194442553 is about 13944.2659541476. The cubic root of 194442553 is about 579.3358956527.

The spelling of 194442553 in words is "one hundred ninety-four million, four hundred forty-two thousand, five hundred fifty-three".