2026555261 has 16 divisors (see below), whose sum is σ = 2159308800. Its totient is φ = 1895355648.

The previous prime is 2026555247. The next prime is 2026555291. The reversal of 2026555261 is 1625556202.

It is a cyclic number.

It is not a de Polignac number, because 2026555261 - 2⁷ = 2026555133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2026555241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2857975 + ... + 2858683.

It is an arithmetic number, because the mean of its divisors is an integer number (134956800).

Almost surely, 2^2026555261 is an apocalyptic number.

It is an amenable number.

2026555261 is a deficient number, since it is larger than the sum of its proper divisors (132753539).

2026555261 is a wasteful number, since it uses less digits than its factorization.

2026555261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 2026555261 is about 45017.2773610311. The cubic root of 2026555261 is about 1265.4728059157.

The spelling of 2026555261 in words is "two billion, twenty-six million, five hundred fifty-five thousand, two hundred sixty-one".