2755266921 has 72 divisors (see below), whose sum is σ = 4595267040. Its totient is φ = 1648278720.

The previous prime is 2755266883. The next prime is 2755266937. The reversal of 2755266921 is 1296625572.

2755266921 is a `hidden beast` number, since 2 + 7 + 552 + 6 + 6 + 92 + 1 = 666.

It is not a de Polignac number, because 2755266921 - 2¹³ = 2755258729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2755266961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2439885 + ... + 2441013.

Almost surely, 2^2755266921 is an apocalyptic number.

It is an amenable number.

2755266921 is a deficient number, since it is larger than the sum of its proper divisors (1840000119).

2755266921 is a wasteful number, since it uses less digits than its factorization.

2755266921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249 (or 1226 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 2755266921 is about 52490.6365078573. The cubic root of 2755266921 is about 1401.9135264189.

The spelling of 2755266921 in words is "two billion, seven hundred fifty-five million, two hundred sixty-six thousand, nine hundred twenty-one".