2755921 has 8 divisors (see below), whose sum is σ = 3335040. Its totient is φ = 2223168.

The previous prime is 2755891. The next prime is 2755943. The reversal of 2755921 is 1295572.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2755921 - 2⁷ = 2755793 is a prime.

It is a Duffinian number.

2755921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2755981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11461 + ... + 11698.

It is an arithmetic number, because the mean of its divisors is an integer number (416880).

2^2755921 is an apocalyptic number.

It is an amenable number.

2755921 is a deficient number, since it is larger than the sum of its proper divisors (579119).

2755921 is a wasteful number, since it uses less digits than its factorization.

2755921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23183.

The product of its digits is 6300, while the sum is 31.

The square root of 2755921 is about 1660.0966839314. The cubic root of 2755921 is about 140.2024452108.

The spelling of 2755921 in words is "two million, seven hundred fifty-five thousand, nine hundred twenty-one".