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55280335 = 5116116477
BaseRepresentation
bin1101001011100…
…0001011001111
310212000112100211
43102320023033
5103122432320
65252503251
71240606105
oct322701317
9125015324
1055280335
1129227a30
121661ab27
13b5b6976
1474adc75
154cbe55a
hex34b82cf

55280335 has 16 divisors (see below), whose sum is σ = 73557792. Its totient is φ = 39542400.

The previous prime is 55280333. The next prime is 55280369. The reversal of 55280335 is 53308255.

It is not a de Polignac number, because 55280335 - 21 = 55280333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55280297 and 55280306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55280333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4884 + ... + 11593.

It is an arithmetic number, because the mean of its divisors is an integer number (4597362).

Almost surely, 255280335 is an apocalyptic number.

55280335 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55280335 is a deficient number, since it is larger than the sum of its proper divisors (18277457).

55280335 is a wasteful number, since it uses less digits than its factorization.

55280335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16554.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 55280335 is about 7435.0746465654. The cubic root of 55280335 is about 380.9402730366.

The spelling of 55280335 in words is "fifty-five million, two hundred eighty thousand, three hundred thirty-five".

Divisors: 1 5 11 55 61 305 671 3355 16477 82385 181247 906235 1005097 5025485 11056067 55280335