2201561045 has 8 divisors (see below), whose sum is σ = 2646947160. Its totient is φ = 1757866240.

The previous prime is 2201561029. The next prime is 2201561057. The reversal of 2201561045 is 5401651022.

2201561045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 93741124 + 2107819921 = 9682^2 + 45911^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2201561045 - 2⁴ = 2201561029 is a prime.

It is a super-2 number, since 2×2201561045² = 9693742069722984050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419960 + ... + 425169.

It is an arithmetic number, because the mean of its divisors is an integer number (330868395).

Almost surely, 2^2201561045 is an apocalyptic number.

It is an amenable number.

2201561045 is a deficient number, since it is larger than the sum of its proper divisors (445386115).

2201561045 is an equidigital number, since it uses as much as digits as its factorization.

2201561045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845655.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2201561045 is about 46920.7954429590. The cubic root of 2201561045 is about 1300.8989925723.

The spelling of 2201561045 in words is "two billion, two hundred one million, five hundred sixty-one thousand, forty-five".