75047827 has 4 divisors (see below), whose sum is σ = 78310800. Its totient is φ = 71784856.

The previous prime is 75047813. The next prime is 75047831. The reversal of 75047827 is 72874057.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72874057 = 3343 ⋅21799.

It is a cyclic number.

It is not a de Polignac number, because 75047827 - 2¹⁹ = 74523539 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 75047827.

It is not an unprimeable number, because it can be changed into a prime (75047837) 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, 1631452 + ... + 1631497.

It is an arithmetic number, because the mean of its divisors is an integer number (19577700).

Almost surely, 2^75047827 is an apocalyptic number.

75047827 is a deficient number, since it is larger than the sum of its proper divisors (3262973).

75047827 is a wasteful number, since it uses less digits than its factorization.

75047827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3262972.

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 75047827 is about 8663.0148909026. The cubic root of 75047827 is about 421.8059555009.

The spelling of 75047827 in words is "seventy-five million, forty-seven thousand, eight hundred twenty-seven".