2798551 has 4 divisors (see below), whose sum is σ = 3198352. Its totient is φ = 2398752.

The previous prime is 2798539. The next prime is 2798597. The reversal of 2798551 is 1558972.

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

It is a cyclic number.

It is not a de Polignac number, because 2798551 - 2⁵ = 2798519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2798551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2798351) 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, 199890 + ... + 199903.

It is an arithmetic number, because the mean of its divisors is an integer number (799588).

2^2798551 is an apocalyptic number.

2798551 is a deficient number, since it is larger than the sum of its proper divisors (399801).

2798551 is an equidigital number, since it uses as much as digits as its factorization.

2798551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399800.

The product of its digits is 25200, while the sum is 37.

The square root of 2798551 is about 1672.8870254742. The cubic root of 2798551 is about 140.9216572654.

The spelling of 2798551 in words is "two million, seven hundred ninety-eight thousand, five hundred fifty-one".