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54520031 = 611078353
BaseRepresentation
bin1100111111111…
…0100011011111
310210120220102102
43033332203133
5102424120111
65224315315
71231261346
oct317764337
9123526372
1054520031
1128858785
1216312b3b
13b3ab897
147352b5d
154bbe13b
hex33fe8df

54520031 has 8 divisors (see below), whose sum is σ = 55938384. Its totient is φ = 53118720.

The previous prime is 54520027. The next prime is 54520043. The reversal of 54520031 is 13002545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54520031 - 22 = 54520027 is a prime.

It is a super-2 number, since 2×545200312 = 5944867560481922, 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 = 54519985 and 54520012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54520021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2351 + ... + 10703.

It is an arithmetic number, because the mean of its divisors is an integer number (6992298).

Almost surely, 254520031 is an apocalyptic number.

54520031 is a deficient number, since it is larger than the sum of its proper divisors (1418353).

54520031 is a wasteful number, since it uses less digits than its factorization.

54520031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8521.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 54520031 is about 7383.7680759894. The cubic root of 54520031 is about 379.1857704392.

Adding to 54520031 its reverse (13002545), we get a palindrome (67522576).

The spelling of 54520031 in words is "fifty-four million, five hundred twenty thousand, thirty-one".

Divisors: 1 61 107 6527 8353 509533 893771 54520031