2800961 has 4 divisors (see below), whose sum is σ = 2948400. Its totient is φ = 2653524.

The previous prime is 2800957. The next prime is 2800969. The reversal of 2800961 is 1690082.

2800961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1690082 = 2 ⋅845041.

It is a cyclic number.

It is not a de Polignac number, because 2800961 - 2² = 2800957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2800961.

It is not an unprimeable number, because it can be changed into a prime (2800969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73691 + ... + 73728.

It is an arithmetic number, because the mean of its divisors is an integer number (737100).

2^2800961 is an apocalyptic number.

It is an amenable number.

2800961 is a deficient number, since it is larger than the sum of its proper divisors (147439).

2800961 is a wasteful number, since it uses less digits than its factorization.

2800961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147438.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 2800961 is about 1673.6071821070. The cubic root of 2800961 is about 140.9620976876.

The spelling of 2800961 in words is "two million, eight hundred thousand, nine hundred sixty-one".