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55253980105 = 531356477291
BaseRepresentation
bin110011011101011001…
…001101001111001001
312021121202010000101121
4303131121031033021
51401130004330410
641214444315241
73664150040002
oct633531151711
9167552100347
1055253980105
1121484482075
12a860542b21
1352974057ac
1429624261a9
151685c699da
hexcdd64d3c9

55253980105 has 8 divisors (see below), whose sum is σ = 68443640064. Its totient is φ = 42777274800.

The previous prime is 55253980079. The next prime is 55253980109. The reversal of 55253980105 is 50108935255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55253980105 - 25 = 55253980073 is a prime.

It is a super-2 number, since 2×552539801052 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55253980109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178238491 + ... + 178238800.

It is an arithmetic number, because the mean of its divisors is an integer number (8555455008).

Almost surely, 255253980105 is an apocalyptic number.

It is an amenable number.

55253980105 is a deficient number, since it is larger than the sum of its proper divisors (13189659959).

55253980105 is a wasteful number, since it uses less digits than its factorization.

55253980105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356477327.

The product of its (nonzero) digits is 270000, while the sum is 43.

The spelling of 55253980105 in words is "fifty-five billion, two hundred fifty-three million, nine hundred eighty thousand, one hundred five".

Divisors: 1 5 31 155 356477291 1782386455 11050796021 55253980105