2321355551 has 2 divisors, whose sum is σ = 2321355552. Its totient is φ = 2321355550.

The previous prime is 2321355527. The next prime is 2321355613. The reversal of 2321355551 is 1555531232.

2321355551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2321355551 - 2¹⁸ = 2321093407 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2321355511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160677775 + 1160677776.

It is an arithmetic number, because the mean of its divisors is an integer number (1160677776).

Almost surely, 2^2321355551 is an apocalyptic number.

2321355551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321355551 is an equidigital number, since it uses as much as digits as its factorization.

2321355551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22500, while the sum is 32.

The square root of 2321355551 is about 48180.4478082137. The cubic root of 2321355551 is about 1324.0789708907.

Adding to 2321355551 its reverse (1555531232), we get a palindrome (3876886783).

The spelling of 2321355551 in words is "two billion, three hundred twenty-one million, three hundred fifty-five thousand, five hundred fifty-one".