2915855 has 4 divisors (see below), whose sum is σ = 3499032. Its totient is φ = 2332680.

The previous prime is 2915849. The next prime is 2915893. The reversal of 2915855 is 5585192.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2915855 - 2⁶ = 2915791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 291581 + ... + 291590.

It is an arithmetic number, because the mean of its divisors is an integer number (874758).

2^2915855 is an apocalyptic number.

2915855 is a deficient number, since it is larger than the sum of its proper divisors (583177).

2915855 is an equidigital number, since it uses as much as digits as its factorization.

2915855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583176.

The product of its digits is 18000, while the sum is 35.

The square root of 2915855 is about 1707.5874794575. The cubic root of 2915855 is about 142.8637266013.

The spelling of 2915855 in words is "two million, nine hundred fifteen thousand, eight hundred fifty-five".