4055555321 has 2 divisors, whose sum is σ = 4055555322. Its totient is φ = 4055555320.

The previous prime is 4055555291. The next prime is 4055555401. The reversal of 4055555321 is 1235555504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3568867600 + 486687721 = 59740^2 + 22061^2 .

It is a cyclic number.

It is not a de Polignac number, because 4055555321 - 2¹⁰ = 4055554297 is a prime.

It is not a weakly prime, because it can be changed into another prime (4055555521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2027777660 + 2027777661.

It is an arithmetic number, because the mean of its divisors is an integer number (2027777661).

Almost surely, 2^4055555321 is an apocalyptic number.

It is an amenable number.

4055555321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4055555321 is an equidigital number, since it uses as much as digits as its factorization.

4055555321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75000, while the sum is 35.

The square root of 4055555321 is about 63683.2420735628. The cubic root of 4055555321 is about 1594.7163367759.

The spelling of 4055555321 in words is "four billion, fifty-five million, five hundred fifty-five thousand, three hundred twenty-one".