3105545021 has 2 divisors, whose sum is σ = 3105545022. Its totient is φ = 3105545020.

The previous prime is 3105544993. The next prime is 3105545029. The reversal of 3105545021 is 1205455013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2421722521 + 683822500 = 49211^2 + 26150^2 .

It is a cyclic number.

It is not a de Polignac number, because 3105545021 - 2¹⁰ = 3105543997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3105545029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1552772510 + 1552772511.

It is an arithmetic number, because the mean of its divisors is an integer number (1552772511).

Almost surely, 2^3105545021 is an apocalyptic number.

It is an amenable number.

3105545021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3105545021 is an equidigital number, since it uses as much as digits as its factorization.

3105545021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 3105545021 is about 55727.4171391426. The cubic root of 3105545021 is about 1458.9685936475.

The spelling of 3105545021 in words is "three billion, one hundred five million, five hundred forty-five thousand, twenty-one".