75321005 has 4 divisors (see below), whose sum is σ = 90385212. Its totient is φ = 60256800.

The previous prime is 75320983. The next prime is 75321007. The reversal of 75321005 is 50012357.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50012357 = 1061 ⋅47137.

It can be written as a sum of positive squares in 2 ways, for example, as 58690921 + 16630084 = 7661^2 + 4078^2 .

It is not a de Polignac number, because 75321005 - 2¹² = 75316909 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 (75321007) 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, 7532096 + ... + 7532105.

It is an arithmetic number, because the mean of its divisors is an integer number (22596303).

Almost surely, 2^75321005 is an apocalyptic number.

It is an amenable number.

75321005 is a deficient number, since it is larger than the sum of its proper divisors (15064207).

75321005 is a wasteful number, since it uses less digits than its factorization.

75321005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15064206.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 75321005 is about 8678.7674816186. The cubic root of 75321005 is about 422.3171343134.

The spelling of 75321005 in words is "seventy-five million, three hundred twenty-one thousand, five".