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521344424 = 2365168053
BaseRepresentation
bin11111000100110…
…001010110101000
31100100000001002202
4133010301112220
52031431010144
6123422115332
715630232406
oct3704612650
91310001082
10521344424
11248315867
1212671bb48
1384019433
144d350476
1530b8264e
hex1f1315a8

521344424 has 8 divisors (see below), whose sum is σ = 977520810. Its totient is φ = 260672208.

The previous prime is 521344403. The next prime is 521344429. The reversal of 521344424 is 424443125.

It can be written as a sum of positive squares in only one way, i.e., 482680900 + 38663524 = 21970^2 + 6218^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (521344429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32584019 + ... + 32584034.

Almost surely, 2521344424 is an apocalyptic number.

It is an amenable number.

521344424 is a deficient number, since it is larger than the sum of its proper divisors (456176386).

521344424 is a wasteful number, since it uses less digits than its factorization.

521344424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65168059 (or 65168055 counting only the distinct ones).

The product of its digits is 15360, while the sum is 29.

The square root of 521344424 is about 22832.9679192172. The cubic root of 521344424 is about 804.8375758614.

Adding to 521344424 its reverse (424443125), we get a palindrome (945787549).

The spelling of 521344424 in words is "five hundred twenty-one million, three hundred forty-four thousand, four hundred twenty-four".