2791045 has 4 divisors (see below), whose sum is σ = 3349260. Its totient is φ = 2232832.

The previous prime is 2791039. The next prime is 2791051. The reversal of 2791045 is 5401972.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2791039) and next prime (2791051).

It can be written as a sum of positive squares in 2 ways, for example, as 1896129 + 894916 = 1377^2 + 946^2 .

It is a cyclic number.

It is not a de Polignac number, because 2791045 - 2³ = 2791037 is a prime.

It is a congruent 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, 279100 + ... + 279109.

It is an arithmetic number, because the mean of its divisors is an integer number (837315).

2^2791045 is an apocalyptic number.

It is an amenable number.

2791045 is a deficient number, since it is larger than the sum of its proper divisors (558215).

2791045 is an equidigital number, since it uses as much as digits as its factorization.

2791045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558214.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2791045 is about 1670.6420921310. The cubic root of 2791045 is about 140.7955556933.

The spelling of 2791045 in words is "two million, seven hundred ninety-one thousand, forty-five".