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54561151 = 291881419
BaseRepresentation
bin1101000000100…
…0100101111111
310210122222211101
43100020211333
5102431424101
65225233531
71231522261
oct320104577
9123588741
1054561151
1128886667
12163328a7
13b3c4508
147363b31
154bcb401
hex340897f

54561151 has 4 divisors (see below), whose sum is σ = 56442600. Its totient is φ = 52679704.

The previous prime is 54561139. The next prime is 54561161. The reversal of 54561151 is 15116545.

It is a happy number.

54561151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15116545 = 53023309.

It is a cyclic number.

It is not a de Polignac number, because 54561151 - 213 = 54552959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54561121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 940681 + ... + 940738.

It is an arithmetic number, because the mean of its divisors is an integer number (14110650).

Almost surely, 254561151 is an apocalyptic number.

54561151 is a deficient number, since it is larger than the sum of its proper divisors (1881449).

54561151 is a wasteful number, since it uses less digits than its factorization.

54561151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881448.

The product of its digits is 3000, while the sum is 28.

The square root of 54561151 is about 7386.5520373175. The cubic root of 54561151 is about 379.2810760867.

Adding to 54561151 its reverse (15116545), we get a palindrome (69677696).

The spelling of 54561151 in words is "fifty-four million, five hundred sixty-one thousand, one hundred fifty-one".

Divisors: 1 29 1881419 54561151