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75023143 = 1353108887
BaseRepresentation
bin1000111100011…
…00001100100111
312020011120101221
410132030030213
5123201220033
611240001211
71600454236
oct436141447
9166146357
1075023143
1139391aa8
1221160207
1312709cc0
149d6cb1d
1568be12d
hex478c327

75023143 has 8 divisors (see below), whose sum is σ = 82319328. Its totient is φ = 67944864.

The previous prime is 75023129. The next prime is 75023149. The reversal of 75023143 is 34132057.

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

It is not a de Polignac number, because 75023143 - 25 = 75023111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75023149) 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, 53755 + ... + 55132.

It is an arithmetic number, because the mean of its divisors is an integer number (10289916).

Almost surely, 275023143 is an apocalyptic number.

75023143 is a deficient number, since it is larger than the sum of its proper divisors (7296185).

75023143 is a wasteful number, since it uses less digits than its factorization.

75023143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108953.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 75023143 is about 8661.5900965123. The cubic root of 75023143 is about 421.7597049948.

The spelling of 75023143 in words is "seventy-five million, twenty-three thousand, one hundred forty-three".

Divisors: 1 13 53 689 108887 1415531 5771011 75023143