75300221 has 4 divisors (see below), whose sum is σ = 75331200. Its totient is φ = 75269244.

The previous prime is 75300139. The next prime is 75300223. The reversal of 75300221 is 12200357.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 75300221 - 2¹⁰ = 75299197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75300193 and 75300202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75300223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11501 + ... + 16818.

It is an arithmetic number, because the mean of its divisors is an integer number (18832800).

Almost surely, 2^75300221 is an apocalyptic number.

It is an amenable number.

75300221 is a deficient number, since it is larger than the sum of its proper divisors (30979).

75300221 is a wasteful number, since it uses less digits than its factorization.

75300221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30978.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 75300221 is about 8677.5699939557. The cubic root of 75300221 is about 422.2782861559.

Adding to 75300221 its reverse (12200357), we get a palindrome (87500578).

The spelling of 75300221 in words is "seventy-five million, three hundred thousand, two hundred twenty-one".