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56541280 = 2551931831
BaseRepresentation
bin1101011110110…
…0000001100000
310221101121001111
43113230001200
5103433310110
65335513104
71254410245
oct327540140
9127347044
1056541280
1129a09334
1216b28794
13b9388a3
14771b5cc
154e6ce8a
hex35ec060

56541280 has 48 divisors (see below), whose sum is σ = 134344224. Its totient is φ = 22487040.

The previous prime is 56541257. The next prime is 56541299. The reversal of 56541280 is 8214565.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29965 + ... + 31795.

It is an arithmetic number, because the mean of its divisors is an integer number (2798838).

Almost surely, 256541280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56541280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67172112).

56541280 is an abundant number, since it is smaller than the sum of its proper divisors (77802944).

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

56541280 is a wasteful number, since it uses less digits than its factorization.

56541280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039 (or 2031 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 56541280 is about 7519.3935925711. The cubic root of 56541280 is about 383.8149426602.

The spelling of 56541280 in words is "fifty-six million, five hundred forty-one thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 193 386 772 965 1544 1831 1930 3088 3662 3860 6176 7324 7720 9155 14648 15440 18310 29296 30880 36620 58592 73240 146480 292960 353383 706766 1413532 1766915 2827064 3533830 5654128 7067660 11308256 14135320 28270640 56541280