2891955 has 32 divisors (see below), whose sum is σ = 5349888. Its totient is φ = 1318400.

The previous prime is 2891929. The next prime is 2891963. The reversal of 2891955 is 5591982.

It is not a de Polignac number, because 2891955 - 2⁶ = 2891891 is a prime.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2290 + ... + 3320.

It is an arithmetic number, because the mean of its divisors is an integer number (167184).

2^2891955 is an apocalyptic number.

2891955 is a deficient number, since it is larger than the sum of its proper divisors (2457933).

2891955 is a wasteful number, since it uses less digits than its factorization.

2891955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067.

The product of its digits is 32400, while the sum is 39.

The square root of 2891955 is about 1700.5749027902. The cubic root of 2891955 is about 142.4723245731.

The spelling of 2891955 in words is "two million, eight hundred ninety-one thousand, nine hundred fifty-five".