2545238321 has 2 divisors, whose sum is σ = 2545238322. Its totient is φ = 2545238320.

The previous prime is 2545238299. The next prime is 2545238341. The reversal of 2545238321 is 1238325452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2205241600 + 339996721 = 46960^2 + 18439^2 .

It is a cyclic number.

It is not a de Polignac number, because 2545238321 - 2⁶ = 2545238257 is a prime.

It is a super-2 number, since 2×2545238321² = 12956476221373798082, which contains 22 as substring.

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 (2545238341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272619160 + 1272619161.

It is an arithmetic number, because the mean of its divisors is an integer number (1272619161).

Almost surely, 2^2545238321 is an apocalyptic number.

It is an amenable number.

2545238321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545238321 is an equidigital number, since it uses as much as digits as its factorization.

2545238321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 35.

The square root of 2545238321 is about 50450.3550136171. The cubic root of 2545238321 is about 1365.3463000748.

The spelling of 2545238321 in words is "two billion, five hundred forty-five million, two hundred thirty-eight thousand, three hundred twenty-one".