2655417921 has 16 divisors (see below), whose sum is σ = 3858851136. Its totient is φ = 1614413376.

The previous prime is 2655417907. The next prime is 2655417929. The reversal of 2655417921 is 1297145562.

It is not a de Polignac number, because 2655417921 - 2⁵ = 2655417889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2655417929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 406930 + ... + 413403.

It is an arithmetic number, because the mean of its divisors is an integer number (241178196).

Almost surely, 2^2655417921 is an apocalyptic number.

It is an amenable number.

2655417921 is a deficient number, since it is larger than the sum of its proper divisors (1203433215).

2655417921 is a wasteful number, since it uses less digits than its factorization.

2655417921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820432.

The product of its digits is 151200, while the sum is 42.

The square root of 2655417921 is about 51530.7473359353. The cubic root of 2655417921 is about 1384.7699394139.

The spelling of 2655417921 in words is "two billion, six hundred fifty-five million, four hundred seventeen thousand, nine hundred twenty-one".