2765155 has 8 divisors (see below), whose sum is σ = 3335184. Its totient is φ = 2200800.

The previous prime is 2765143. The next prime is 2765173. The reversal of 2765155 is 5515672.

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

It is not a de Polignac number, because 2765155 - 2⁵ = 2765123 is a prime.

It is an Ulam number.

It is a Duffinian number.

2765155 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256 + ... + 2365.

It is an arithmetic number, because the mean of its divisors is an integer number (416898).

2^2765155 is an apocalyptic number.

2765155 is a deficient number, since it is larger than the sum of its proper divisors (570029).

2765155 is a wasteful number, since it uses less digits than its factorization.

2765155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837.

The product of its digits is 10500, while the sum is 31.

The square root of 2765155 is about 1662.8755214988. The cubic root of 2765155 is about 140.3588582738.

The spelling of 2765155 in words is "two million, seven hundred sixty-five thousand, one hundred fifty-five".