4545434321 has 2 divisors, whose sum is σ = 4545434322. Its totient is φ = 4545434320.

The previous prime is 4545434293. The next prime is 4545434329. The reversal of 4545434321 is 1234345454.

4545434321 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2319481921 + 2225952400 = 48161^2 + 47180^2 .

It is a cyclic number.

It is not a de Polignac number, because 4545434321 - 2¹⁰ = 4545433297 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (4545434329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2272717160 + 2272717161.

It is an arithmetic number, because the mean of its divisors is an integer number (2272717161).

Almost surely, 2^4545434321 is an apocalyptic number.

It is an amenable number.

4545434321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4545434321 is an equidigital number, since it uses as much as digits as its factorization.

4545434321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 35.

The square root of 4545434321 is about 67419.8362575882. The cubic root of 4545434321 is about 1656.5013555512.

Adding to 4545434321 its reverse (1234345454), we get a palindrome (5779779775).

The spelling of 4545434321 in words is "four billion, five hundred forty-five million, four hundred thirty-four thousand, three hundred twenty-one".