1050541021 has 2 divisors, whose sum is σ = 1050541022. Its totient is φ = 1050541020.

The previous prime is 1050541013. The next prime is 1050541057. The reversal of 1050541021 is 1201450501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 798684121 + 251856900 = 28261^2 + 15870^2 .

It is a cyclic number.

It is not a de Polignac number, because 1050541021 - 2³ = 1050541013 is a prime.

It is a super-2 number, since 2×1050541021² = 2207272873607444882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1050541021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1050541001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525270510 + 525270511.

It is an arithmetic number, because the mean of its divisors is an integer number (525270511).

Almost surely, 2^1050541021 is an apocalyptic number.

It is an amenable number.

1050541021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1050541021 is an equidigital number, since it uses as much as digits as its factorization.

1050541021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 1050541021 is about 32412.0505522252. The cubic root of 1050541021 is about 1016.5708956577.

Adding to 1050541021 its reverse (1201450501), we get a palindrome (2251991522).

The spelling of 1050541021 in words is "one billion, fifty million, five hundred forty-one thousand, twenty-one".