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245255413 = 13178531301
BaseRepresentation
bin11101001111001…
…00110011110101
3122002111021011211
432213210303311
51000241133123
640200401421
76035431234
oct1647446365
9562437154
10245255413
11116493027
126a176271
133ba70c60
1424802b1b
15167e840d
hexe9e4cf5

245255413 has 16 divisors (see below), whose sum is σ = 280200816. Its totient is φ = 212659200.

The previous prime is 245255393. The next prime is 245255419. The reversal of 245255413 is 314552542.

It can be written as a sum of positive squares in 8 ways, for example, as 99860049 + 145395364 = 9993^2 + 12058^2 .

It is a de Polignac number, because none of the positive numbers 2k-245255413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245255419) 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 15 ways as a sum of consecutive naturals, for example, 187863 + ... + 189163.

It is an arithmetic number, because the mean of its divisors is an integer number (17512551).

Almost surely, 2245255413 is an apocalyptic number.

It is an amenable number.

245255413 is a deficient number, since it is larger than the sum of its proper divisors (34945403).

245255413 is a wasteful number, since it uses less digits than its factorization.

245255413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184.

The product of its digits is 24000, while the sum is 31.

The square root of 245255413 is about 15660.6325862016. The cubic root of 245255413 is about 625.9498415105.

The spelling of 245255413 in words is "two hundred forty-five million, two hundred fifty-five thousand, four hundred thirteen".

Divisors: 1 13 17 221 853 1301 11089 14501 16913 22117 188513 287521 1109753 14426789 18865801 245255413