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2154015054 = 2321092813907
BaseRepresentation
bin1000000001100011…
…1010100101001110
312120010011022011100
42000120322211032
513402411440204
6553424003530
7104243553162
oct20030724516
95503138140
102154015054
11a05981434
125014605a6
13284350929
1416610aca2
15c9186a39
hex8063a94e

2154015054 has 48 divisors (see below), whose sum is σ = 4727820240. Its totient is φ = 708704640.

The previous prime is 2154015023. The next prime is 2154015119. The reversal of 2154015054 is 4505104512.

2154015054 is a `hidden beast` number, since 2 + 154 + 0 + 1 + 505 + 4 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 549369 + ... + 553275.

It is an arithmetic number, because the mean of its divisors is an integer number (98496255).

Almost surely, 22154015054 is an apocalyptic number.

2154015054 is an abundant number, since it is smaller than the sum of its proper divisors (2573805186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2154015054 is a wasteful number, since it uses less digits than its factorization.

2154015054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4305 (or 4302 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 2154015054 is about 46411.3677238670. The cubic root of 2154015054 is about 1291.4658045059.

Adding to 2154015054 its reverse (4505104512), we get a palindrome (6659119566).

The spelling of 2154015054 in words is "two billion, one hundred fifty-four million, fifteen thousand, fifty-four".

Divisors: 1 2 3 6 9 18 109 218 281 327 562 654 843 981 1686 1962 2529 3907 5058 7814 11721 23442 30629 35163 61258 70326 91887 183774 275661 425863 551322 851726 1097867 1277589 2195734 2555178 3293601 3832767 6587202 7665534 9880803 19761606 119667503 239335006 359002509 718005018 1077007527 2154015054