4020555505 has 16 divisors (see below), whose sum is σ = 5284627920. Its totient is φ = 2922852352.

The previous prime is 4020555493. The next prime is 4020555541. The reversal of 4020555505 is 5055550204.

It can be written as a sum of positive squares in 8 ways, for example, as 252682816 + 3767872689 = 15896^2 + 61383^2 .

It is a cyclic number.

It is not a de Polignac number, because 4020555505 - 2¹³ = 4020547313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 813064 + ... + 817993.

It is an arithmetic number, because the mean of its divisors is an integer number (330289245).

Almost surely, 2^4020555505 is an apocalyptic number.

It is an amenable number.

4020555505 is a deficient number, since it is larger than the sum of its proper divisors (1264072415).

4020555505 is a wasteful number, since it uses less digits than its factorization.

4020555505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631108.

The product of its (nonzero) digits is 25000, while the sum is 31.

The square root of 4020555505 is about 63407.8504997607. The cubic root of 4020555505 is about 1590.1155599461.

The spelling of 4020555505 in words is "four billion, twenty million, five hundred fifty-five thousand, five hundred five".