2321553449 has 2 divisors, whose sum is σ = 2321553450. Its totient is φ = 2321553448.

The previous prime is 2321553413. The next prime is 2321553491. The reversal of 2321553449 is 9443551232.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2304480025 + 17073424 = 48005^2 + 4132^2 .

It is a cyclic number.

It is not a de Polignac number, because 2321553449 - 2⁸ = 2321553193 is a prime.

It is a super-2 number, since 2×2321553449² = 10779220833127591202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2321553499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160776724 + 1160776725.

It is an arithmetic number, because the mean of its divisors is an integer number (1160776725).

Almost surely, 2^2321553449 is an apocalyptic number.

It is an amenable number.

2321553449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321553449 is an equidigital number, since it uses as much as digits as its factorization.

2321553449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 38.

The square root of 2321553449 is about 48182.5014813469. The cubic root of 2321553449 is about 1324.1165961961.

The spelling of 2321553449 in words is "two billion, three hundred twenty-one million, five hundred fifty-three thousand, four hundred forty-nine".