2816529421 has 2 divisors, whose sum is σ = 2816529422. Its totient is φ = 2816529420.

The previous prime is 2816529347. The next prime is 2816529431. The reversal of 2816529421 is 1249256182.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1460080521 + 1356448900 = 38211^2 + 36830^2 .

It is a cyclic number.

It is not a de Polignac number, because 2816529421 - 2¹⁷ = 2816398349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2816529431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1408264710 + 1408264711.

It is an arithmetic number, because the mean of its divisors is an integer number (1408264711).

Almost surely, 2^2816529421 is an apocalyptic number.

It is an amenable number.

2816529421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2816529421 is an equidigital number, since it uses as much as digits as its factorization.

2816529421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 40.

The square root of 2816529421 is about 53070.9847374250. The cubic root of 2816529421 is about 1412.2278248231.

The spelling of 2816529421 in words is "two billion, eight hundred sixteen million, five hundred twenty-nine thousand, four hundred twenty-one".