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54553431 = 3151120427
BaseRepresentation
bin1101000000011…
…0101101010111
310210122121020110
43100012231113
5102431202211
65225134103
71231460622
oct320065527
9123577213
1054553431
1128880889
121632a333
13b3c0b4a
147360db9
154bc8ea6
hex3406b57

54553431 has 8 divisors (see below), whose sum is σ = 73220224. Its totient is φ = 36127800.

The previous prime is 54553403. The next prime is 54553451. The reversal of 54553431 is 13435545.

54553431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 54553431 - 25 = 54553399 is a prime.

It is a super-2 number, since 2×545534312 = 5952153667743522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54553451) 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 7 ways as a sum of consecutive naturals, for example, 59761 + ... + 60666.

It is an arithmetic number, because the mean of its divisors is an integer number (9152528).

Almost surely, 254553431 is an apocalyptic number.

54553431 is a deficient number, since it is larger than the sum of its proper divisors (18666793).

54553431 is a wasteful number, since it uses less digits than its factorization.

54553431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120581.

The product of its digits is 18000, while the sum is 30.

The square root of 54553431 is about 7386.0294475449. The cubic root of 54553431 is about 379.2631867524.

Adding to 54553431 its reverse (13435545), we get a palindrome (67988976).

The spelling of 54553431 in words is "fifty-four million, five hundred fifty-three thousand, four hundred thirty-one".

Divisors: 1 3 151 453 120427 361281 18184477 54553431