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54135131 = 263205837
BaseRepresentation
bin1100111010000…
…0100101011011
310202212100102212
43032200211123
5102324311011
65212145335
71225066241
oct316404533
9122770385
1054135131
1128615586
121616824b
13b2a562b
147292791
154b4508b
hex33a095b

54135131 has 4 divisors (see below), whose sum is σ = 54341232. Its totient is φ = 53929032.

The previous prime is 54135119. The next prime is 54135163. The reversal of 54135131 is 13153145.

54135131 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.

It is a cyclic number.

It is not a de Polignac number, because 54135131 - 210 = 54134107 is a prime.

It is a super-2 number, since 2×541351312 = 5861224816774322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54135097 and 54135106.

It is not an unprimeable number, because it can be changed into a prime (54131131) 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, 102656 + ... + 103181.

It is an arithmetic number, because the mean of its divisors is an integer number (13585308).

Almost surely, 254135131 is an apocalyptic number.

54135131 is a deficient number, since it is larger than the sum of its proper divisors (206101).

54135131 is a wasteful number, since it uses less digits than its factorization.

54135131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206100.

The product of its digits is 900, while the sum is 23.

The square root of 54135131 is about 7357.6579833531. The cubic root of 54135131 is about 378.2913382503.

Adding to 54135131 its reverse (13153145), we get a palindrome (67288276).

The spelling of 54135131 in words is "fifty-four million, one hundred thirty-five thousand, one hundred thirty-one".

Divisors: 1 263 205837 54135131