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545216241 = 31391307473
BaseRepresentation
bin100000011111110…
…101011011110001
31101222220212002010
4200133311123301
52104033404431
6130033513133
716340155503
oct4037653361
91358825063
10545216241
1125a840039
121327127a9
1388c56c7b
14525a5d73
1532cea846
hex207f56f1

545216241 has 8 divisors (see below), whose sum is σ = 732185440. Its totient is φ = 360862272.

The previous prime is 545216239. The next prime is 545216257. The reversal of 545216241 is 142612545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 545216241 - 21 = 545216239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 545216199 and 545216208.

It is not an unprimeable number, because it can be changed into a prime (545216261) 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 in 7 ways as a sum of consecutive naturals, for example, 653320 + ... + 654153.

It is an arithmetic number, because the mean of its divisors is an integer number (91523180).

Almost surely, 2545216241 is an apocalyptic number.

It is an amenable number.

545216241 is a deficient number, since it is larger than the sum of its proper divisors (186969199).

545216241 is a wasteful number, since it uses less digits than its factorization.

545216241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307615.

The product of its digits is 9600, while the sum is 30.

The square root of 545216241 is about 23349.8659739194. The cubic root of 545216241 is about 816.9389347542.

Adding to 545216241 its reverse (142612545), we get a palindrome (687828786).

The spelling of 545216241 in words is "five hundred forty-five million, two hundred sixteen thousand, two hundred forty-one".

Divisors: 1 3 139 417 1307473 3922419 181738747 545216241