4055822721 has 24 divisors (see below), whose sum is σ = 6161515776. Its totient is φ = 2567279520.

The previous prime is 4055822711. The next prime is 4055822731. The reversal of 4055822721 is 1272285504.

It is a happy number.

4055822721 is a `hidden beast` number, since 4 + 0 + 5 + 582 + 2 + 72 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (4055822711) and next prime (4055822731).

It is not a de Polignac number, because 4055822721 - 2²¹ = 4053725569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4055822711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122355 + ... + 151928.

It is an arithmetic number, because the mean of its divisors is an integer number (256729824).

Almost surely, 2^4055822721 is an apocalyptic number.

It is an amenable number.

4055822721 is a deficient number, since it is larger than the sum of its proper divisors (2105693055).

4055822721 is a wasteful number, since it uses less digits than its factorization.

4055822721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274373 (or 274370 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 4055822721 is about 63685.3414923717. The cubic root of 4055822721 is about 1594.7513848143.

The spelling of 4055822721 in words is "four billion, fifty-five million, eight hundred twenty-two thousand, seven hundred twenty-one".