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56030505 = 354386869
BaseRepresentation
bin1101010110111…
…1010100101001
310220102122101220
43111233110221
5103320434010
65320532253
71250152146
oct325572451
9126378356
1056030505
112969a603
1216921089
13b7ba25b
1476273cd
154dbb970
hex356f529

56030505 has 16 divisors (see below), whose sum is σ = 91734720. Its totient is φ = 29187648.

The previous prime is 56030503. The next prime is 56030509. The reversal of 56030505 is 50503065.

It is not a de Polignac number, because 56030505 - 21 = 56030503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56030503) 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, 42790 + ... + 44079.

It is an arithmetic number, because the mean of its divisors is an integer number (5733420).

Almost surely, 256030505 is an apocalyptic number.

It is an amenable number.

56030505 is a deficient number, since it is larger than the sum of its proper divisors (35704215).

56030505 is a wasteful number, since it uses less digits than its factorization.

56030505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86920.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 56030505 is about 7485.3526971012. The cubic root of 56030505 is about 382.6556929511.

The spelling of 56030505 in words is "fifty-six million, thirty thousand, five hundred five".

Divisors: 1 3 5 15 43 129 215 645 86869 260607 434345 1303035 3735367 11206101 18676835 56030505