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48540000257 = 7791811912539
BaseRepresentation
bin101101001101001101…
…011010000000000001
311122021211120111111022
4231031031122000001
51243402220002012
634144324355225
73335603123510
oct551515320001
9148254514438
1048540000257
11196496236a1
1294a7b45b15
134767444458
1424c6880677
1513e15ec472
hexb4d35a001

48540000257 has 32 divisors (see below), whose sum is σ = 56804966400. Its totient is φ = 40622212800.

The previous prime is 48540000221. The next prime is 48540000259. The reversal of 48540000257 is 75200004584.

It is a cyclic number.

It is not a de Polignac number, because 48540000257 - 212 = 48539996161 is a prime.

It is a super-2 number, since 2×485400002572 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (48540000259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19116494 + ... + 19119032.

It is an arithmetic number, because the mean of its divisors is an integer number (1775155200).

Almost surely, 248540000257 is an apocalyptic number.

It is an amenable number.

48540000257 is a deficient number, since it is larger than the sum of its proper divisors (8264966143).

48540000257 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (48540000256) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (2997).

48540000257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2997.

The product of its (nonzero) digits is 44800, while the sum is 35.

The spelling of 48540000257 in words is "forty-eight billion, five hundred forty million, two hundred fifty-seven", and thus it is an aban number.

Divisors: 1 7 79 181 191 553 1267 1337 2539 14299 15089 17773 34571 100093 105623 200581 241997 459559 484949 1404067 2731109 3216913 3394643 19117763 36305161 38310971 87775769 254136127 268176797 614430383 6934285751 48540000257