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55320205141 = 107517011263
BaseRepresentation
bin110011100001010101…
…110101011101010101
312021210100201121001201
4303201111311131111
51401243433031031
641225211552501
73665612661625
oct634125653525
9167710647051
1055320205141
11215088a4a03
12a87a75b731
1352a8051cc6
14296b144885
15168b99bd61
hexce1575755

55320205141 has 4 divisors (see below), whose sum is σ = 55837216512. Its totient is φ = 54803193772.

The previous prime is 55320205063. The next prime is 55320205147. The reversal of 55320205141 is 14150202355.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14150202355 = 52830040471.

It is a cyclic number.

It is not a de Polignac number, because 55320205141 - 219 = 55319680853 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 (55320205147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258505525 + ... + 258505738.

It is an arithmetic number, because the mean of its divisors is an integer number (13959304128).

Almost surely, 255320205141 is an apocalyptic number.

It is an amenable number.

55320205141 is a deficient number, since it is larger than the sum of its proper divisors (517011371).

55320205141 is a wasteful number, since it uses less digits than its factorization.

55320205141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517011370.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 55320205141 its reverse (14150202355), we get a palindrome (69470407496).

The spelling of 55320205141 in words is "fifty-five billion, three hundred twenty million, two hundred five thousand, one hundred forty-one".

Divisors: 1 107 517011263 55320205141