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54252643 = 121744579
BaseRepresentation
bin1100111011110…
…1010001100011
310210002022122011
43032331101203
5102342041033
65214453351
71226065654
oct316752143
9123068564
1054252643
11286958a5
1216204257
13b316c73
1472c352b
154b69ccd
hex33bd463

54252643 has 4 divisors (see below), whose sum is σ = 54298440. Its totient is φ = 54206848.

The previous prime is 54252641. The next prime is 54252677. The reversal of 54252643 is 34625245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34625245 = 56925049.

It is a cyclic number.

It is not a de Polignac number, because 54252643 - 21 = 54252641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54252641) 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, 21073 + ... + 23506.

It is an arithmetic number, because the mean of its divisors is an integer number (13574610).

Almost surely, 254252643 is an apocalyptic number.

54252643 is a deficient number, since it is larger than the sum of its proper divisors (45797).

54252643 is a wasteful number, since it uses less digits than its factorization.

54252643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45796.

The product of its digits is 28800, while the sum is 31.

The square root of 54252643 is about 7365.6393476738. The cubic root of 54252643 is about 378.5648614637.

Adding to 54252643 its reverse (34625245), we get a palindrome (88877888).

The spelling of 54252643 in words is "fifty-four million, two hundred fifty-two thousand, six hundred forty-three".

Divisors: 1 1217 44579 54252643