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54028031 = 101534931
BaseRepresentation
bin1100111000011…
…0011011111111
310202122220112012
43032012123333
5102312344111
65210001435
71224142061
oct316063377
9122586465
1054028031
1128552072
121611627b
13b268965
147265731
154b2348b
hex33866ff

54028031 has 4 divisors (see below), whose sum is σ = 54563064. Its totient is φ = 53493000.

The previous prime is 54027997. The next prime is 54028033. The reversal of 54028031 is 13082045.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-54028031 is a prime.

It is a super-2 number, since 2×540280312 = 5838056267473922, 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 = 54027988 and 54028006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54028033) 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, 267365 + ... + 267566.

It is an arithmetic number, because the mean of its divisors is an integer number (13640766).

Almost surely, 254028031 is an apocalyptic number.

54028031 is a deficient number, since it is larger than the sum of its proper divisors (535033).

54028031 is a wasteful number, since it uses less digits than its factorization.

54028031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535032.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 54028031 is about 7350.3762488733. The cubic root of 54028031 is about 378.0417052237.

The spelling of 54028031 in words is "fifty-four million, twenty-eight thousand, thirty-one".

Divisors: 1 101 534931 54028031