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75083143 = 343321871
BaseRepresentation
bin1000111100110…
…10110110000111
312020021121201011
410132122312013
5123210130033
611241143051
71601124202
oct436326607
9166247634
1075083143
1139423093
122118aa87
131272b3c5
149d86939
1568d1ccd
hex479ad87

75083143 has 4 divisors (see below), whose sum is σ = 75108448. Its totient is φ = 75057840.

The previous prime is 75083137. The next prime is 75083153. The reversal of 75083143 is 34138057.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34138057 = 172008121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-75083143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75083123) 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, 7503 + ... + 14368.

It is an arithmetic number, because the mean of its divisors is an integer number (18777112).

Almost surely, 275083143 is an apocalyptic number.

75083143 is a deficient number, since it is larger than the sum of its proper divisors (25305).

75083143 is a wasteful number, since it uses less digits than its factorization.

75083143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25304.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 75083143 is about 8665.0529715634. The cubic root of 75083143 is about 421.8721095952.

The spelling of 75083143 in words is "seventy-five million, eighty-three thousand, one hundred forty-three".

Divisors: 1 3433 21871 75083143