2980561 has 4 divisors (see below), whose sum is σ = 3036852. Its totient is φ = 2924272.

The previous prime is 2980553. The next prime is 2980573. The reversal of 2980561 is 1650892.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1890625 + 1089936 = 1375^2 + 1044^2 .

It is a cyclic number.

It is not a de Polignac number, because 2980561 - 2³ = 2980553 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2980531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28066 + ... + 28171.

It is an arithmetic number, because the mean of its divisors is an integer number (759213).

2^2980561 is an apocalyptic number.

It is an amenable number.

2980561 is a deficient number, since it is larger than the sum of its proper divisors (56291).

2980561 is an equidigital number, since it uses as much as digits as its factorization.

2980561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56290.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 2980561 is about 1726.4301318038. The cubic root of 2980561 is about 143.9127718893.

The spelling of 2980561 in words is "two million, nine hundred eighty thousand, five hundred sixty-one".