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54121541 = 306117681
BaseRepresentation
bin1100111001110…
…1010001000101
310202211122210112
43032131101011
5102323342131
65212002405
71225011515
oct316352105
9122748715
1054121541
1128606351
1216160405
13b29c3a6
14728b845
154b4102b
hex339d445

54121541 has 4 divisors (see below), whose sum is σ = 54142284. Its totient is φ = 54100800.

The previous prime is 54121531. The next prime is 54121547. The reversal of 54121541 is 14512145.

54121541 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: 14512145 = 52902429.

It can be written as a sum of positive squares in 2 ways, for example, as 35880100 + 18241441 = 5990^2 + 4271^2 .

It is a cyclic number.

It is not a de Polignac number, because 54121541 - 214 = 54105157 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 (54121547) 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, 5780 + ... + 11901.

It is an arithmetic number, because the mean of its divisors is an integer number (13535571).

Almost surely, 254121541 is an apocalyptic number.

It is an amenable number.

54121541 is a deficient number, since it is larger than the sum of its proper divisors (20743).

54121541 is a wasteful number, since it uses less digits than its factorization.

54121541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20742.

The product of its digits is 800, while the sum is 23.

The square root of 54121541 is about 7356.7343978154. The cubic root of 54121541 is about 378.2596803758.

Adding to 54121541 its reverse (14512145), we get a palindrome (68633686).

The spelling of 54121541 in words is "fifty-four million, one hundred twenty-one thousand, five hundred forty-one".

Divisors: 1 3061 17681 54121541