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54131541 = 318043847
BaseRepresentation
bin1100111001111…
…1101101010101
310202212011111220
43032133231111
5102324202131
65212120553
71225052622
oct316375525
9122764456
1054131541
1128612912
1216166159
13b2a3ac9
147291349
154b43e96
hex339fb55

54131541 has 4 divisors (see below), whose sum is σ = 72175392. Its totient is φ = 36087692.

The previous prime is 54131531. The next prime is 54131557. The reversal of 54131541 is 14513145.

It is a happy number.

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 54131541 - 25 = 54131509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54131531) 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, 9021921 + ... + 9021926.

It is an arithmetic number, because the mean of its divisors is an integer number (18043848).

Almost surely, 254131541 is an apocalyptic number.

It is an amenable number.

54131541 is a deficient number, since it is larger than the sum of its proper divisors (18043851).

54131541 is a wasteful number, since it uses less digits than its factorization.

54131541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18043850.

The product of its digits is 1200, while the sum is 24.

The square root of 54131541 is about 7357.4140158075. The cubic root of 54131541 is about 378.2829758683.

Adding to 54131541 its reverse (14513145), we get a palindrome (68644686).

The spelling of 54131541 in words is "fifty-four million, one hundred thirty-one thousand, five hundred forty-one".

Divisors: 1 3 18043847 54131541