2533255421 has 2 divisors, whose sum is σ = 2533255422. Its totient is φ = 2533255420.

The previous prime is 2533255393. The next prime is 2533255451. The reversal of 2533255421 is 1245523352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1624896100 + 908359321 = 40310^2 + 30139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2533255421 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2533255451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1266627710 + 1266627711.

It is an arithmetic number, because the mean of its divisors is an integer number (1266627711).

Almost surely, 2^2533255421 is an apocalyptic number.

It is an amenable number.

2533255421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2533255421 is an equidigital number, since it uses as much as digits as its factorization.

2533255421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36000, while the sum is 32.

The square root of 2533255421 is about 50331.4555819718. The cubic root of 2533255421 is about 1363.2002599187.

Adding to 2533255421 its reverse (1245523352), we get a palindrome (3778778773).

The spelling of 2533255421 in words is "two billion, five hundred thirty-three million, two hundred fifty-five thousand, four hundred twenty-one".