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75115061 = 7171095791
BaseRepresentation
bin1000111101000…
…10101000110101
312020100020111022
410132202220311
5123212140221
611241550525
71601316230
oct436425065
9166306438
1075115061
113944506a
12211a5445
131273caa8
149d94417
1568db4ab
hex47a2a35

75115061 has 16 divisors (see below), whose sum is σ = 91745280. Its totient is φ = 60030720.

The previous prime is 75115057. The next prime is 75115081. The reversal of 75115061 is 16051157.

It is a cyclic number.

It is not a de Polignac number, because 75115061 - 22 = 75115057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75115061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75115081) 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 15 ways as a sum of consecutive naturals, for example, 10076 + ... + 15866.

It is an arithmetic number, because the mean of its divisors is an integer number (5734080).

Almost surely, 275115061 is an apocalyptic number.

It is an amenable number.

75115061 is a deficient number, since it is larger than the sum of its proper divisors (16630219).

75115061 is a wasteful number, since it uses less digits than its factorization.

75115061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5924.

The product of its (nonzero) digits is 1050, while the sum is 26.

The square root of 75115061 is about 8666.8945418760. The cubic root of 75115061 is about 421.9318806963.

The spelling of 75115061 in words is "seventy-five million, one hundred fifteen thousand, sixty-one".

Divisors: 1 7 17 109 119 763 1853 5791 12971 40537 98447 631219 689129 4418533 10730723 75115061