4475224021 has 2 divisors, whose sum is σ = 4475224022. Its totient is φ = 4475224020.

The previous prime is 4475224003. The next prime is 4475224067. The reversal of 4475224021 is 1204225744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4110604996 + 364619025 = 64114^2 + 19095^2 .

It is a cyclic number.

It is not a de Polignac number, because 4475224021 - 2⁵ = 4475223989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4475222021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2237612010 + 2237612011.

It is an arithmetic number, because the mean of its divisors is an integer number (2237612011).

Almost surely, 2^4475224021 is an apocalyptic number.

It is an amenable number.

4475224021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4475224021 is an equidigital number, since it uses as much as digits as its factorization.

4475224021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17920, while the sum is 31.

The square root of 4475224021 is about 66897.1151919124. The cubic root of 4475224021 is about 1647.9281029378.

Adding to 4475224021 its reverse (1204225744), we get a palindrome (5679449765).

The spelling of 4475224021 in words is "four billion, four hundred seventy-five million, two hundred twenty-four thousand, twenty-one".