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520214253 = 31323579949
BaseRepresentation
bin11111000000011…
…101011011101101
31100020212121210120
4133000131123231
52031133324003
6123341555153
715614514426
oct3700353355
91306777716
10520214253
11247713739
12126275ab9
1383a11bb0
144d13864d
1530a0c853
hex1f01d6ed

520214253 has 16 divisors (see below), whose sum is σ = 779452800. Its totient is φ = 306212544.

The previous prime is 520214251. The next prime is 520214257. The reversal of 520214253 is 352412025.

It is not a de Polignac number, because 520214253 - 21 = 520214251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520214251) 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, 289078 + ... + 290871.

It is an arithmetic number, because the mean of its divisors is an integer number (48715800).

Almost surely, 2520214253 is an apocalyptic number.

It is an amenable number.

520214253 is a deficient number, since it is larger than the sum of its proper divisors (259238547).

520214253 is a wasteful number, since it uses less digits than its factorization.

520214253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579988.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 520214253 is about 22808.2058259741. The cubic root of 520214253 is about 804.2555791883.

Adding to 520214253 its reverse (352412025), we get a palindrome (872626278).

The spelling of 520214253 in words is "five hundred twenty million, two hundred fourteen thousand, two hundred fifty-three".

Divisors: 1 3 13 23 39 69 299 897 579949 1739847 7539337 13338827 22618011 40016481 173404751 520214253