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75027061 = 457164173
BaseRepresentation
bin1000111100011…
…01001001110101
312020011202210001
410132031021311
5123201331221
611240031301
71600501534
oct436151165
9166152701
1075027061
1139394a3a
1221162531
131270ba15
149d7031b
1568c0391
hex478d275

75027061 has 4 divisors (see below), whose sum is σ = 75191692. Its totient is φ = 74862432.

The previous prime is 75027053. The next prime is 75027077. The reversal of 75027061 is 16072057.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16072057 = 71226367.

It can be written as a sum of positive squares in 2 ways, for example, as 68807025 + 6220036 = 8295^2 + 2494^2 .

It is a cyclic number.

It is not a de Polignac number, because 75027061 - 23 = 75027053 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 (75027361) 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, 81630 + ... + 82543.

It is an arithmetic number, because the mean of its divisors is an integer number (18797923).

Almost surely, 275027061 is an apocalyptic number.

It is an amenable number.

75027061 is a deficient number, since it is larger than the sum of its proper divisors (164631).

75027061 is a wasteful number, since it uses less digits than its factorization.

75027061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164630.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 75027061 is about 8661.8162645025. The cubic root of 75027061 is about 421.7670468438.

The spelling of 75027061 in words is "seventy-five million, twenty-seven thousand, sixty-one".

Divisors: 1 457 164173 75027061