2203552561 has 4 divisors (see below), whose sum is σ = 2518345792. Its totient is φ = 1888759332.

The previous prime is 2203552553. The next prime is 2203552567. The reversal of 2203552561 is 1652553022.

It is a happy number.

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 2203552561 - 2³ = 2203552553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2203552567) 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, 157396605 + ... + 157396618.

It is an arithmetic number, because the mean of its divisors is an integer number (629586448).

Almost surely, 2^2203552561 is an apocalyptic number.

It is an amenable number.

2203552561 is a deficient number, since it is larger than the sum of its proper divisors (314793231).

2203552561 is an equidigital number, since it uses as much as digits as its factorization.

2203552561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314793230.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 2203552561 is about 46942.0127497746. The cubic root of 2203552561 is about 1301.2911355870.

The spelling of 2203552561 in words is "two billion, two hundred three million, five hundred fifty-two thousand, five hundred sixty-one".