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55161430 = 2517219087
BaseRepresentation
bin1101001001101…
…1001001010110
310211210111020221
43102123021112
5103110131210
65250144554
71236602332
oct322331126
9124714227
1055161430
1129156665
121658215a
13b5747cc
14747c7c2
154c991da
hex349b256

55161430 has 24 divisors (see below), whose sum is σ = 105480288. Its totient is φ = 20765568.

The previous prime is 55161419. The next prime is 55161437. The reversal of 55161430 is 3416155.

55161430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 55161395 and 55161404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55161437) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 6654 + ... + 12433.

It is an arithmetic number, because the mean of its divisors is an integer number (4395012).

Almost surely, 255161430 is an apocalyptic number.

55161430 is a deficient number, since it is larger than the sum of its proper divisors (50318858).

55161430 is a wasteful number, since it uses less digits than its factorization.

55161430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19128 (or 19111 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 55161430 is about 7427.0741210789. The cubic root of 55161430 is about 380.6669496915. Note that the first 3 decimals are identical.

Adding to 55161430 its reverse (3416155), we get a palindrome (58577585).

The spelling of 55161430 in words is "fifty-five million, one hundred sixty-one thousand, four hundred thirty".

Divisors: 1 2 5 10 17 34 85 170 289 578 1445 2890 19087 38174 95435 190870 324479 648958 1622395 3244790 5516143 11032286 27580715 55161430