2772155 has 4 divisors (see below), whose sum is σ = 3326592. Its totient is φ = 2217720.

The previous prime is 2772137. The next prime is 2772179. The reversal of 2772155 is 5512772.

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

It is a de Polignac number, because none of the positive numbers 2^k-2772155 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277211 + ... + 277220.

It is an arithmetic number, because the mean of its divisors is an integer number (831648).

2^2772155 is an apocalyptic number.

2772155 is a deficient number, since it is larger than the sum of its proper divisors (554437).

2772155 is an equidigital number, since it uses as much as digits as its factorization.

2772155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554436.

The product of its digits is 4900, while the sum is 29.

The square root of 2772155 is about 1664.9789788463. The cubic root of 2772155 is about 140.4771981250.

The spelling of 2772155 in words is "two million, seven hundred seventy-two thousand, one hundred fifty-five".