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230457553 is a prime number
BaseRepresentation
bin11011011110010…
…00000011010001
3121001122110022221
431233020003101
5432444120203
634511301041
75465566624
oct1557100321
9531573287
10230457553
111090a6197
126521a781
133898c621
142286ddbb
1515373abd
hexdbc80d1

230457553 has 2 divisors, whose sum is σ = 230457554. Its totient is φ = 230457552.

The previous prime is 230457541. The next prime is 230457583. The reversal of 230457553 is 355754032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147064129 + 83393424 = 12127^2 + 9132^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-230457553 is a prime.

It is a super-2 number, since 2×2304575532 = 106221367469495618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (230457523) 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, 115228776 + 115228777.

It is an arithmetic number, because the mean of its divisors is an integer number (115228777).

Almost surely, 2230457553 is an apocalyptic number.

It is an amenable number.

230457553 is a deficient number, since it is larger than the sum of its proper divisors (1).

230457553 is an equidigital number, since it uses as much as digits as its factorization.

230457553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63000, while the sum is 34.

The square root of 230457553 is about 15180.8284688287. The cubic root of 230457553 is about 613.0985872748.

The spelling of 230457553 in words is "two hundred thirty million, four hundred fifty-seven thousand, five hundred fifty-three".