4751928221 has 4 divisors (see below), whose sum is σ = 4752560832. Its totient is φ = 4751295612.

The previous prime is 4751928193. The next prime is 4751928227. The reversal of 4751928221 is 1228291574.

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 4751928221 - 2¹⁰ = 4751927197 is a prime.

It is a super-3 number, since 3×4751928221³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4751928227) 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, 304901 + ... + 320106.

It is an arithmetic number, because the mean of its divisors is an integer number (1188140208).

Almost surely, 2^4751928221 is an apocalyptic number.

It is an amenable number.

4751928221 is a deficient number, since it is larger than the sum of its proper divisors (632611).

4751928221 is an equidigital number, since it uses as much as digits as its factorization.

4751928221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632610.

The product of its digits is 80640, while the sum is 41.

The square root of 4751928221 is about 68934.2311264875. The cubic root of 4751928221 is about 1681.2151333851.

The spelling of 4751928221 in words is "four billion, seven hundred fifty-one million, nine hundred twenty-eight thousand, two hundred twenty-one".