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54002405215 = 5114720890679
BaseRepresentation
bin110010010010110010…
…110100111101011111
312011101112001102102001
4302102302310331133
51341044103431330
640450334543131
73621141604423
oct622262647537
9164345042361
1054002405215
11209a1a4a360
12a571367aa7
135128024135
14288410cb83
151610e429ca
hexc92cb4f5f

54002405215 has 16 divisors (see below), whose sum is σ = 72198190080. Its totient is φ = 38438847520.

The previous prime is 54002405209. The next prime is 54002405221. The reversal of 54002405215 is 51250420045.

It is an interprime number because it is at equal distance from previous prime (54002405209) and next prime (54002405221).

It is not a de Polignac number, because 54002405215 - 213 = 54002397023 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10442755 + ... + 10447924.

It is an arithmetic number, because the mean of its divisors is an integer number (4512386880).

Almost surely, 254002405215 is an apocalyptic number.

54002405215 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

54002405215 is a deficient number, since it is larger than the sum of its proper divisors (18195784865).

54002405215 is a wasteful number, since it uses less digits than its factorization.

54002405215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20890742.

The product of its (nonzero) digits is 8000, while the sum is 28.

The spelling of 54002405215 in words is "fifty-four billion, two million, four hundred five thousand, two hundred fifteen".

Divisors: 1 5 11 47 55 235 517 2585 20890679 104453395 229797469 981861913 1148987345 4909309565 10800481043 54002405215