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75044901 = 31371571163
BaseRepresentation
bin1000111100100…
…01100000100101
312020012200020210
410132101200211
5123202414101
611240250033
71600604541
oct436214045
9166180223
1075044901
11393a7388
1221170919
1312716b89
149d76a21
1568c57d6
hex4791825

75044901 has 16 divisors (see below), whose sum is σ = 101519424. Its totient is φ = 49305984.

The previous prime is 75044899. The next prime is 75044911. The reversal of 75044901 is 10944057.

It is a happy number.

It is not a de Polignac number, because 75044901 - 21 = 75044899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75044911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63946 + ... + 65108.

It is an arithmetic number, because the mean of its divisors is an integer number (6344964).

Almost surely, 275044901 is an apocalyptic number.

It is an amenable number.

75044901 is a deficient number, since it is larger than the sum of its proper divisors (26474523).

75044901 is a wasteful number, since it uses less digits than its factorization.

75044901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 75044901 is about 8662.8460104056. The cubic root of 75044901 is about 421.8004735733.

Adding to 75044901 its reverse (10944057), we get a palindrome (85988958).

The spelling of 75044901 in words is "seventy-five million, forty-four thousand, nine hundred one".

Divisors: 1 3 137 157 411 471 1163 3489 21509 64527 159331 182591 477993 547773 25014967 75044901