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54650261 = 531031137
BaseRepresentation
bin1101000001111…
…0010110010101
310210211112001202
43100132112111
5102442302021
65231202245
71232343131
oct320362625
9123745052
1054650261
1128937606
1216376385
13b425c43
1473883c1
154be7a0b
hex341e595

54650261 has 4 divisors (see below), whose sum is σ = 55681452. Its totient is φ = 53619072.

The previous prime is 54650243. The next prime is 54650263. The reversal of 54650261 is 16205645.

54650261 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: 16205645 = 53241129.

It can be written as a sum of positive squares in 2 ways, for example, as 35343025 + 19307236 = 5945^2 + 4394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-54650261 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 (54650263) 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, 515516 + ... + 515621.

It is an arithmetic number, because the mean of its divisors is an integer number (13920363).

Almost surely, 254650261 is an apocalyptic number.

It is an amenable number.

54650261 is a deficient number, since it is larger than the sum of its proper divisors (1031191).

54650261 is a wasteful number, since it uses less digits than its factorization.

54650261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031190.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 54650261 is about 7392.5814841637. The cubic root of 54650261 is about 379.4874460839.

The spelling of 54650261 in words is "fifty-four million, six hundred fifty thousand, two hundred sixty-one".

Divisors: 1 53 1031137 54650261