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75133141 = 227330983
BaseRepresentation
bin1000111101001…
…11000011010101
312020101011021221
410132213003111
5123213230031
611242210341
71601423026
oct436470325
9166334257
1075133141
1139457706
12211b39b1
13127480a5
149d9ac4d
1568e1a11
hex47a70d5

75133141 has 4 divisors (see below), whose sum is σ = 75464352. Its totient is φ = 74801932.

The previous prime is 75133127. The next prime is 75133147. The reversal of 75133141 is 14133157.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14133157 = 83170279.

It is a cyclic number.

It is not a de Polignac number, because 75133141 - 25 = 75133109 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 (75133147) 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, 165265 + ... + 165718.

It is an arithmetic number, because the mean of its divisors is an integer number (18866088).

Almost surely, 275133141 is an apocalyptic number.

It is an amenable number.

75133141 is a deficient number, since it is larger than the sum of its proper divisors (331211).

75133141 is a wasteful number, since it uses less digits than its factorization.

75133141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331210.

The product of its digits is 1260, while the sum is 25.

The square root of 75133141 is about 8667.9375286166. The cubic root of 75133141 is about 421.9657306164.

Adding to 75133141 its reverse (14133157), we get a palindrome (89266298).

The spelling of 75133141 in words is "seventy-five million, one hundred thirty-three thousand, one hundred forty-one".

Divisors: 1 227 330983 75133141