2261573 has 2 divisors, whose sum is σ = 2261574. Its totient is φ = 2261572.

The previous prime is 2261569. The next prime is 2261587. The reversal of 2261573 is 3751622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1909924 + 351649 = 1382^2 + 593^2 .

It is a cyclic number.

It is not a de Polignac number, because 2261573 - 2² = 2261569 is a prime.

It is a super-2 number, since 2×2261573² = 10229424868658, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2261503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130786 + 1130787.

It is an arithmetic number, because the mean of its divisors is an integer number (1130787).

2^2261573 is an apocalyptic number.

It is an amenable number.

2261573 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261573 is an equidigital number, since it uses as much as digits as its factorization.

2261573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 26.

The square root of 2261573 is about 1503.8527188525. The cubic root of 2261573 is about 131.2613510969.

The spelling of 2261573 in words is "two million, two hundred sixty-one thousand, five hundred seventy-three".