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55557454799 = 7112232851879
BaseRepresentation
bin110011101111011110…
…110111101111001111
312022101220011010102002
4303233132313233033
51402240202023144
641304525022515
74004523400610
oct635736675717
9168356133362
1055557454799
112161a80a100
12a9260b4a3b
13531524c012
142990861c07
1516a271314e
hexcef7b7bcf

55557454799 has 24 divisors (see below), whose sum is σ = 72825607680. Its totient is φ = 41409268560.

The previous prime is 55557454751. The next prime is 55557454807. The reversal of 55557454799 is 99745475555.

It is not a de Polignac number, because 55557454799 - 212 = 55557450703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55557454399) 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, 1406459 + ... + 1445420.

It is an arithmetic number, because the mean of its divisors is an integer number (3034400320).

Almost surely, 255557454799 is an apocalyptic number.

55557454799 is a deficient number, since it is larger than the sum of its proper divisors (17268152881).

55557454799 is a wasteful number, since it uses less digits than its factorization.

55557454799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2851931 (or 2851920 counting only the distinct ones).

The product of its digits is 198450000, while the sum is 65.

The spelling of 55557454799 in words is "fifty-five billion, five hundred fifty-seven million, four hundred fifty-four thousand, seven hundred ninety-nine".

Divisors: 1 7 11 23 77 121 161 253 847 1771 2783 19481 2851879 19963153 31370669 65593217 219594683 345077359 459152519 721525387 2415541513 5050677709 7936779257 55557454799