4055870821 has 2 divisors, whose sum is σ = 4055870822. Its totient is φ = 4055870820.

The previous prime is 4055870813. The next prime is 4055870827. The reversal of 4055870821 is 1280785504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2319481921 + 1736388900 = 48161^2 + 41670^2 .

It is a cyclic number.

It is not a de Polignac number, because 4055870821 - 2³ = 4055870813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4055870827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2027935410 + 2027935411.

It is an arithmetic number, because the mean of its divisors is an integer number (2027935411).

Almost surely, 2^4055870821 is an apocalyptic number.

It is an amenable number.

4055870821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4055870821 is an equidigital number, since it uses as much as digits as its factorization.

4055870821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 89600, while the sum is 40.

The square root of 4055870821 is about 63685.7191291737. The cubic root of 4055870821 is about 1594.7576891036.

The spelling of 4055870821 in words is "four billion, fifty-five million, eight hundred seventy thousand, eight hundred twenty-one".