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55042141 = 7211176007
BaseRepresentation
bin1101000111111…
…0000001011101
310211120102121211
43101332001131
5103042322031
65243424421
71235564500
oct321760135
9124512554
1055042141
1129084a80
1216525111
13b53241b
14744b137
154c73bb1
hex347e05d

55042141 has 24 divisors (see below), whose sum is σ = 73970496. Its totient is φ = 40360320.

The previous prime is 55042133. The next prime is 55042147. The reversal of 55042141 is 14124055.

It is not a de Polignac number, because 55042141 - 23 = 55042133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55042147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6160 + ... + 12166.

It is an arithmetic number, because the mean of its divisors is an integer number (3082104).

Almost surely, 255042141 is an apocalyptic number.

It is an amenable number.

55042141 is a deficient number, since it is larger than the sum of its proper divisors (18928355).

55042141 is a wasteful number, since it uses less digits than its factorization.

55042141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6049 (or 6042 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 55042141 is about 7419.0390887230. The cubic root of 55042141 is about 380.3923486862.

Adding to 55042141 its reverse (14124055), we get a palindrome (69166196).

The spelling of 55042141 in words is "fifty-five million, forty-two thousand, one hundred forty-one".

Divisors: 1 7 11 17 49 77 119 187 539 833 1309 6007 9163 42049 66077 102119 294343 462539 714833 1123309 3237773 5003831 7863163 55042141