2730421523 has 2 divisors, whose sum is σ = 2730421524. Its totient is φ = 2730421522.

The previous prime is 2730421513. The next prime is 2730421559. The reversal of 2730421523 is 3251240372.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2730421523 is a prime.

It is not a weakly prime, because it can be changed into another prime (2730421513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1365210761 + 1365210762.

It is an arithmetic number, because the mean of its divisors is an integer number (1365210762).

Almost surely, 2^2730421523 is an apocalyptic number.

2730421523 is a deficient number, since it is larger than the sum of its proper divisors (1).

2730421523 is an equidigital number, since it uses as much as digits as its factorization.

2730421523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 2730421523 is about 52253.4355138492. The cubic root of 2730421523 is about 1397.6869156236.

Adding to 2730421523 its reverse (3251240372), we get a palindrome (5981661895).

The spelling of 2730421523 in words is "two billion, seven hundred thirty million, four hundred twenty-one thousand, five hundred twenty-three".