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54288121 = 191284231
BaseRepresentation
bin1100111100010…
…1111011111001
310210011010022011
43033011323321
5102344204441
65215325521
71226304256
oct317057371
9123133264
1054288121
112870a518
12162208a1
13b32a164
1472d242d
154b75581
hex33c5ef9

54288121 has 4 divisors (see below), whose sum is σ = 54572544. Its totient is φ = 54003700.

The previous prime is 54288097. The next prime is 54288127. The reversal of 54288121 is 12188245.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54288121 - 29 = 54287609 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54288127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141925 + ... + 142306.

It is an arithmetic number, because the mean of its divisors is an integer number (13643136).

Almost surely, 254288121 is an apocalyptic number.

It is an amenable number.

54288121 is a deficient number, since it is larger than the sum of its proper divisors (284423).

54288121 is a wasteful number, since it uses less digits than its factorization.

54288121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284422.

The product of its digits is 5120, while the sum is 31.

The square root of 54288121 is about 7368.0472989796. The cubic root of 54288121 is about 378.6473631130.

The spelling of 54288121 in words is "fifty-four million, two hundred eighty-eight thousand, one hundred twenty-one".

Divisors: 1 191 284231 54288121