2783155 has 16 divisors (see below), whose sum is σ = 3576960. Its totient is φ = 2071552.

The previous prime is 2783153. The next prime is 2783167. The reversal of 2783155 is 5513872.

It is not a de Polignac number, because 2783155 - 2¹ = 2783153 is a prime.

It is a d-powerful number, because it can be written as 2¹⁸ + 7² + 8² + 3¹¹ + 1 + 5⁸ + 5⁹ .

It is not an unprimeable number, because it can be changed into a prime (2783153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11526 + ... + 11764.

It is an arithmetic number, because the mean of its divisors is an integer number (223560).

2^2783155 is an apocalyptic number.

2783155 is a deficient number, since it is larger than the sum of its proper divisors (793805).

2783155 is a wasteful number, since it uses less digits than its factorization.

2783155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398.

The product of its digits is 8400, while the sum is 31.

The square root of 2783155 is about 1668.2790533960. The cubic root of 2783155 is about 140.6627589140.

The spelling of 2783155 in words is "two million, seven hundred eighty-three thousand, one hundred fifty-five".