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54501431 = 247722003
BaseRepresentation
bin1100111111101…
…0000000110111
310210112221220112
43033322000313
5102423021211
65224053235
71231153205
oct317720067
9123487815
1054501431
1128845806
121630421b
13b3a328a
14734a075
154bb888b
hex33fa037

54501431 has 4 divisors (see below), whose sum is σ = 54525912. Its totient is φ = 54476952.

The previous prime is 54501373. The next prime is 54501449. The reversal of 54501431 is 13410545.

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-54501431 is a prime.

It is a super-2 number, since 2×545014312 = 5940811962095522, 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 = 54501397 and 54501406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54509431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8525 + ... + 13478.

It is an arithmetic number, because the mean of its divisors is an integer number (13631478).

Almost surely, 254501431 is an apocalyptic number.

54501431 is a deficient number, since it is larger than the sum of its proper divisors (24481).

54501431 is a wasteful number, since it uses less digits than its factorization.

54501431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24480.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 54501431 is about 7382.5084490300. The cubic root of 54501431 is about 379.1426446534.

Adding to 54501431 its reverse (13410545), we get a palindrome (67911976).

The spelling of 54501431 in words is "fifty-four million, five hundred one thousand, four hundred thirty-one".

Divisors: 1 2477 22003 54501431