75527947 has 4 divisors (see below), whose sum is σ = 82394136. Its totient is φ = 68661760.

The previous prime is 75527897. The next prime is 75527987. The reversal of 75527947 is 74972557.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 75527947 - 2⁷ = 75527819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75527897 and 75527906.

It is not an unprimeable number, because it can be changed into a prime (75527987) 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 3 ways as a sum of consecutive naturals, for example, 3433078 + ... + 3433099.

It is an arithmetic number, because the mean of its divisors is an integer number (20598534).

Almost surely, 2^75527947 is an apocalyptic number.

75527947 is a deficient number, since it is larger than the sum of its proper divisors (6866189).

75527947 is a wasteful number, since it uses less digits than its factorization.

75527947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6866188.

The product of its digits is 617400, while the sum is 46.

The square root of 75527947 is about 8690.6816188375. The cubic root of 75527947 is about 422.7035481516.

The spelling of 75527947 in words is "seventy-five million, five hundred twenty-seven thousand, nine hundred forty-seven".