4520154421 has 2 divisors, whose sum is σ = 4520154422. Its totient is φ = 4520154420.

The previous prime is 4520154407. The next prime is 4520154521. The reversal of 4520154421 is 1244510254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3374331921 + 1145822500 = 58089^2 + 33850^2 .

It is a cyclic number.

It is not a de Polignac number, because 4520154421 - 2⁵ = 4520154389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4520154421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4520154521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2260077210 + 2260077211.

It is an arithmetic number, because the mean of its divisors is an integer number (2260077211).

Almost surely, 2^4520154421 is an apocalyptic number.

It is an amenable number.

4520154421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4520154421 is an equidigital number, since it uses as much as digits as its factorization.

4520154421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 4520154421 is about 67232.0936830023. The cubic root of 4520154421 is about 1653.4247106276.

Adding to 4520154421 its reverse (1244510254), we get a palindrome (5764664675).

The spelling of 4520154421 in words is "four billion, five hundred twenty million, one hundred fifty-four thousand, four hundred twenty-one".