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56054231 = 3153109313
BaseRepresentation
bin1101010111010…
…1000111010111
310220110211221122
43111311013113
5103322213411
65321234155
71250311262
oct325650727
9126424848
1056054231
1129706412
121693295b
13b7c7cac
147631cd9
154dc39db
hex35751d7

56054231 has 16 divisors (see below), whose sum is σ = 59685120. Its totient is φ = 52565760.

The previous prime is 56054227. The next prime is 56054267. The reversal of 56054231 is 13245065.

It is a cyclic number.

It is not a de Polignac number, because 56054231 - 22 = 56054227 is a prime.

It is a super-2 number, since 2×560542312 = 6284153626002722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56054231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53054231) 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, 178931 + ... + 179243.

It is an arithmetic number, because the mean of its divisors is an integer number (3730320).

Almost surely, 256054231 is an apocalyptic number.

56054231 is a deficient number, since it is larger than the sum of its proper divisors (3630889).

56054231 is a wasteful number, since it uses less digits than its factorization.

56054231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 56054231 is about 7486.9373578253. The cubic root of 56054231 is about 382.7096969131.

Adding to 56054231 its reverse (13245065), we get a palindrome (69299296).

The spelling of 56054231 in words is "fifty-six million, fifty-four thousand, two hundred thirty-one".

Divisors: 1 31 53 109 313 1643 3379 5777 9703 16589 34117 179087 514259 1057627 1808201 56054231