2245561 has 2 divisors, whose sum is σ = 2245562. Its totient is φ = 2245560.

The previous prime is 2245549. The next prime is 2245577. The reversal of 2245561 is 1655422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1155625 + 1089936 = 1075^2 + 1044^2 .

It is a cyclic number.

It is not a de Polignac number, because 2245561 - 2¹³ = 2237369 is a prime.

It is not a weakly prime, because it can be changed into another prime (2245501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1122780 + 1122781.

It is an arithmetic number, because the mean of its divisors is an integer number (1122781).

2^2245561 is an apocalyptic number.

It is an amenable number.

2245561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2245561 is an equidigital number, since it uses as much as digits as its factorization.

2245561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 25.

The square root of 2245561 is about 1498.5196028081. The cubic root of 2245561 is about 130.9508391181.

The spelling of 2245561 in words is "two million, two hundred forty-five thousand, five hundred sixty-one".