2203445261 has 4 divisors (see below), whose sum is σ = 2216639712. Its totient is φ = 2190250812.

The previous prime is 2203445207. The next prime is 2203445339. The reversal of 2203445261 is 1625443022.

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.

It is a cyclic number.

It is not a de Polignac number, because 2203445261 - 2²² = 2199250957 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 (2203415261) 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, 6596975 + ... + 6597308.

It is an arithmetic number, because the mean of its divisors is an integer number (554159928).

Almost surely, 2^2203445261 is an apocalyptic number.

It is an amenable number.

2203445261 is a deficient number, since it is larger than the sum of its proper divisors (13194451).

2203445261 is a wasteful number, since it uses less digits than its factorization.

2203445261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13194450.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 2203445261 is about 46940.8698364229. The cubic root of 2203445261 is about 1301.2700135124.

Adding to 2203445261 its reverse (1625443022), we get a palindrome (3828888283).

The spelling of 2203445261 in words is "two billion, two hundred three million, four hundred forty-five thousand, two hundred sixty-one".