2775489 has 4 divisors (see below), whose sum is σ = 3700656. Its totient is φ = 1850324.

The previous prime is 2775469. The next prime is 2775499. The reversal of 2775489 is 9845772.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2775489 - 2⁵ = 2775457 is a prime.

It is a D-number.

2775489 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2775489.

It is not an unprimeable number, because it can be changed into a prime (2775449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462579 + ... + 462584.

It is an arithmetic number, because the mean of its divisors is an integer number (925164).

2^2775489 is an apocalyptic number.

It is an amenable number.

2775489 is a deficient number, since it is larger than the sum of its proper divisors (925167).

2775489 is an equidigital number, since it uses as much as digits as its factorization.

2775489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925166.

The product of its digits is 141120, while the sum is 42.

The square root of 2775489 is about 1665.9798918354. The cubic root of 2775489 is about 140.5334916760.

The spelling of 2775489 in words is "two million, seven hundred seventy-five thousand, four hundred eighty-nine".