2871052621 has 2 divisors, whose sum is σ = 2871052622. Its totient is φ = 2871052620.

The previous prime is 2871052607. The next prime is 2871052649. The reversal of 2871052621 is 1262501782.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1774515625 + 1096536996 = 42125^2 + 33114^2 .

It is a cyclic number.

It is not a de Polignac number, because 2871052621 - 2⁷ = 2871052493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2871052651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1435526310 + 1435526311.

It is an arithmetic number, because the mean of its divisors is an integer number (1435526311).

Almost surely, 2^2871052621 is an apocalyptic number.

It is an amenable number.

2871052621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2871052621 is an equidigital number, since it uses as much as digits as its factorization.

2871052621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 2871052621 is about 53582.2043312889. The cubic root of 2871052621 is about 1421.2824196413.

The spelling of 2871052621 in words is "two billion, eight hundred seventy-one million, fifty-two thousand, six hundred twenty-one".