2990261 has 4 divisors (see below), whose sum is σ = 3000012. Its totient is φ = 2980512.

The previous prime is 2990237. The next prime is 2990279. The reversal of 2990261 is 1620992.

2990261 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.

It can be written as a sum of positive squares in 2 ways, for example, as 988036 + 2002225 = 994^2 + 1415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2990261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2990231) 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, 4400 + ... + 5033.

It is an arithmetic number, because the mean of its divisors is an integer number (750003).

2^2990261 is an apocalyptic number.

It is an amenable number.

2990261 is a deficient number, since it is larger than the sum of its proper divisors (9751).

2990261 is an equidigital number, since it uses as much as digits as its factorization.

2990261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9750.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 2990261 is about 1729.2371150308. The cubic root of 2990261 is about 144.0687204147.

The spelling of 2990261 in words is "two million, nine hundred ninety thousand, two hundred sixty-one".