2655000421 has 2 divisors, whose sum is σ = 2655000422. Its totient is φ = 2655000420.

The previous prime is 2655000419. The next prime is 2655000451. The reversal of 2655000421 is 1240005562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2032747396 + 622253025 = 45086^2 + 24945^2 .

It is a cyclic number.

It is not a de Polignac number, because 2655000421 - 2¹ = 2655000419 is a prime.

Together with 2655000419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2655000401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1327500210 + 1327500211.

It is an arithmetic number, because the mean of its divisors is an integer number (1327500211).

Almost surely, 2^2655000421 is an apocalyptic number.

It is an amenable number.

2655000421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2655000421 is an equidigital number, since it uses as much as digits as its factorization.

2655000421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2655000421 is about 51526.6961972141. The cubic root of 2655000421 is about 1384.6973617922.

Adding to 2655000421 its reverse (1240005562), we get a palindrome (3895005983).

The spelling of 2655000421 in words is "two billion, six hundred fifty-five million, four hundred twenty-one", and thus it is an aban number.