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55665015001 = 128119434479
BaseRepresentation
bin110011110101111001…
…001011100011011001
312022200101112202021021
4303311321023203121
51403000220440001
641323330242441
74010300551321
oct636571134331
9168611482237
1055665015001
11216754a4732
12a956126421
13533160b9cb
1429a0c60281
1516abdacba1
hexcf5e4b8d9

55665015001 has 4 divisors (see below), whose sum is σ = 55665577600. Its totient is φ = 55664452404.

The previous prime is 55665014971. The next prime is 55665015011. The reversal of 55665015001 is 10051056655.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10051056655 = 52010211331.

It is a cyclic number.

It is not a de Polignac number, because 55665015001 - 229 = 55128144089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55665015011) 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, 89121 + ... + 345358.

It is an arithmetic number, because the mean of its divisors is an integer number (13916394400).

Almost surely, 255665015001 is an apocalyptic number.

It is an amenable number.

55665015001 is a deficient number, since it is larger than the sum of its proper divisors (562599).

55665015001 is a wasteful number, since it uses less digits than its factorization.

55665015001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562598.

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 55665015001 in words is "fifty-five billion, six hundred sixty-five million, fifteen thousand, one".

Divisors: 1 128119 434479 55665015001