2143050521 has 2 divisors, whose sum is σ = 2143050522. Its totient is φ = 2143050520.

The previous prime is 2143050517. The next prime is 2143050529. The reversal of 2143050521 is 1250503412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1161105625 + 981944896 = 34075^2 + 31336^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143050521 - 2² = 2143050517 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (2143050529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071525260 + 1071525261.

It is an arithmetic number, because the mean of its divisors is an integer number (1071525261).

Almost surely, 2^2143050521 is an apocalyptic number.

It is an amenable number.

2143050521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143050521 is an equidigital number, since it uses as much as digits as its factorization.

2143050521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2143050521 is about 46293.0936641741. The cubic root of 2143050521 is about 1289.2707696675.

Adding to 2143050521 its reverse (1250503412), we get a palindrome (3393553933).

The spelling of 2143050521 in words is "two billion, one hundred forty-three million, fifty thousand, five hundred twenty-one".