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531243050 = 25213262869
BaseRepresentation
bin11111101010100…
…010000000101010
31101000121221110112
4133222202000222
52041444234200
6124414214322
716110330362
oct3752420052
91330557415
10531243050
11252966848
12129ab43a2
13860a3b00
14507a99a2
153198a535
hex1faa202a

531243050 has 36 divisors (see below), whose sum is σ = 1069984530. Its totient is φ = 196148160.

The previous prime is 531243043. The next prime is 531243073. The reversal of 531243050 is 50342135.

It can be written as a sum of positive squares in 9 ways, for example, as 54213769 + 477029281 = 7363^2 + 21841^2 .

It is an unprimeable number.

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 in 17 ways as a sum of consecutive naturals, for example, 22985 + ... + 39884.

Almost surely, 2531243050 is an apocalyptic number.

531243050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

531243050 is an abundant number, since it is smaller than the sum of its proper divisors (538741480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531243050 is a wasteful number, since it uses less digits than its factorization.

531243050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62907 (or 62889 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 531243050 is about 23048.7103760709. The cubic root of 531243050 is about 809.8994184919.

Adding to 531243050 its reverse (50342135), we get a palindrome (581585185).

The spelling of 531243050 in words is "five hundred thirty-one million, two hundred forty-three thousand, fifty".

Divisors: 1 2 5 10 13 25 26 50 65 130 169 325 338 650 845 1690 4225 8450 62869 125738 314345 628690 817297 1571725 1634594 3143450 4086485 8172970 10624861 20432425 21249722 40864850 53124305 106248610 265621525 531243050