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75044201 = 83904147
BaseRepresentation
bin1000111100100…
…01010101101001
312020012122021212
410132101111221
5123202403301
611240242505
71600602521
oct436212551
9166178255
1075044201
11393a6901
1221170435
131271676b
149d76681
1568c54bb
hex4791569

75044201 has 4 divisors (see below), whose sum is σ = 75948432. Its totient is φ = 74139972.

The previous prime is 75044161. The next prime is 75044261. The reversal of 75044201 is 10244057.

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: 10244057 = 18156597.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-75044201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75044261) 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 3 ways as a sum of consecutive naturals, for example, 451991 + ... + 452156.

It is an arithmetic number, because the mean of its divisors is an integer number (18987108).

Almost surely, 275044201 is an apocalyptic number.

It is an amenable number.

75044201 is a deficient number, since it is larger than the sum of its proper divisors (904231).

75044201 is an equidigital number, since it uses as much as digits as its factorization.

75044201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904230.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 75044201 is about 8662.8056078848. The cubic root of 75044201 is about 421.7991620862.

Adding to 75044201 its reverse (10244057), we get a palindrome (85288258).

The spelling of 75044201 in words is "seventy-five million, forty-four thousand, two hundred one".

Divisors: 1 83 904147 75044201