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54288257 = 2313916981
BaseRepresentation
bin1100111100010…
…1111110000001
310210011010111012
43033011332001
5102344211012
65215330305
71226304542
oct317057601
9123133435
1054288257
112870a631
1216220995
13b32a23a
1472d24c9
154b75622
hex33c5f81

54288257 has 8 divisors (see below), whose sum is σ = 57059520. Its totient is φ = 51551280.

The previous prime is 54288253. The next prime is 54288277. The reversal of 54288257 is 75288245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54288257 - 22 = 54288253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54288253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5294 + ... + 11687.

It is an arithmetic number, because the mean of its divisors is an integer number (7132440).

Almost surely, 254288257 is an apocalyptic number.

It is an amenable number.

54288257 is a deficient number, since it is larger than the sum of its proper divisors (2771263).

54288257 is a wasteful number, since it uses less digits than its factorization.

54288257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17143.

The product of its digits is 179200, while the sum is 41.

The square root of 54288257 is about 7368.0565280133. The cubic root of 54288257 is about 378.6476793025.

It can be divided in two parts, 54288 and 257, that added together give a palindrome (54545).

The spelling of 54288257 in words is "fifty-four million, two hundred eighty-eight thousand, two hundred fifty-seven".

Divisors: 1 23 139 3197 16981 390563 2360359 54288257