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553278442 = 21915799221
BaseRepresentation
bin100000111110100…
…101101111101010
31102120002110100011
4200332211233222
52113114402232
6130522402134
716465534453
oct4076455752
91376073304
10553278442
11264347312
1213536034a
138a81a7c2
14536a412a
153388e547
hex20fa5bea

553278442 has 16 divisors (see below), whose sum is σ = 874245600. Its totient is φ = 261884880.

The previous prime is 553278389. The next prime is 553278469. The reversal of 553278442 is 244872355.

It is a super-2 number, since 2×5532784422 = 612234068763894728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 553278395 and 553278404.

It is an unprimeable number.

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, 55392 + ... + 64612.

It is an arithmetic number, because the mean of its divisors is an integer number (54640350).

Almost surely, 2553278442 is an apocalyptic number.

553278442 is a deficient number, since it is larger than the sum of its proper divisors (320967158).

553278442 is a wasteful number, since it uses less digits than its factorization.

553278442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10821.

The product of its digits is 268800, while the sum is 40.

The square root of 553278442 is about 23521.8715666930. The cubic root of 553278442 is about 820.9459844005.

The spelling of 553278442 in words is "five hundred fifty-three million, two hundred seventy-eight thousand, four hundred forty-two".

Divisors: 1 2 19 38 1579 3158 9221 18442 30001 60002 175199 350398 14559959 29119918 276639221 553278442