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55214450057 = 1318612282249
BaseRepresentation
bin110011011011000010…
…011010010110001001
312021111222201200100202
4303123002122112021
51401034344400212
641210513141545
73663160040024
oct633302322611
9167458650322
1055214450057
1121464132608
12a84b25a8b5
13528c174b30
14295b0961bb
15168255c0c2
hexcdb09a589

55214450057 has 8 divisors (see below), whose sum is σ = 59493693000. Its totient is φ = 50939775360.

The previous prime is 55214450033. The next prime is 55214450069. The reversal of 55214450057 is 75005441255.

It can be written as a sum of positive squares in 4 ways, for example, as 3228626041 + 51985824016 = 56821^2 + 228004^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 55214450057 - 26 = 55214449993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55214450057.

It is not an unprimeable number, because it can be changed into a prime (55214450257) by changing a digit.

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, 1116932 + ... + 1165317.

It is an arithmetic number, because the mean of its divisors is an integer number (7436711625).

Almost surely, 255214450057 is an apocalyptic number.

It is an amenable number.

55214450057 is a deficient number, since it is larger than the sum of its proper divisors (4279242943).

55214450057 is a wasteful number, since it uses less digits than its factorization.

55214450057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284123.

The product of its (nonzero) digits is 140000, while the sum is 38.

The spelling of 55214450057 in words is "fifty-five billion, two hundred fourteen million, four hundred fifty thousand, fifty-seven".

Divisors: 1 13 1861 24193 2282249 29669237 4247265389 55214450057