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56056215 = 3531120551
BaseRepresentation
bin1101010111010…
…1100110010111
310220110221200010
43111311212113
5103322244330
65321251303
71250320125
oct325654627
9126427603
1056056215
1129707956
1216933b33
13b7c8b77
147632915
154dc43b0
hex3575997

56056215 has 16 divisors (see below), whose sum is σ = 92583936. Its totient is φ = 28932000.

The previous prime is 56056211. The next prime is 56056229. The reversal of 56056215 is 51265065.

It is not a de Polignac number, because 56056215 - 22 = 56056211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56056211) 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, 59811 + ... + 60740.

It is an arithmetic number, because the mean of its divisors is an integer number (5786496).

Almost surely, 256056215 is an apocalyptic number.

56056215 is a deficient number, since it is larger than the sum of its proper divisors (36527721).

56056215 is a wasteful number, since it uses less digits than its factorization.

56056215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120590.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 56056215 is about 7487.0698540884. The cubic root of 56056215 is about 382.7142121065.

The spelling of 56056215 in words is "fifty-six million, fifty-six thousand, two hundred fifteen".

Divisors: 1 3 5 15 31 93 155 465 120551 361653 602755 1808265 3737081 11211243 18685405 56056215