2921155 has 16 divisors (see below), whose sum is σ = 3739680. Its totient is φ = 2184192.

The previous prime is 2921147. The next prime is 2921173. The reversal of 2921155 is 5511292.

It is a cyclic number.

It is not a de Polignac number, because 2921155 - 2³ = 2921147 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9057 + ... + 9373.

It is an arithmetic number, because the mean of its divisors is an integer number (233730).

2^2921155 is an apocalyptic number.

2921155 is a deficient number, since it is larger than the sum of its proper divisors (818525).

2921155 is a wasteful number, since it uses less digits than its factorization.

2921155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438.

The product of its digits is 900, while the sum is 25.

The square root of 2921155 is about 1709.1386719632. The cubic root of 2921155 is about 142.9502328980.

The spelling of 2921155 in words is "two million, nine hundred twenty-one thousand, one hundred fifty-five".