2291573 has 2 divisors, whose sum is σ = 2291574. Its totient is φ = 2291572.

The previous prime is 2291567. The next prime is 2291581. The reversal of 2291573 is 3751922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2067844 + 223729 = 1438^2 + 473^2 .

It is a cyclic number.

It is not a de Polignac number, because 2291573 - 2⁴ = 2291557 is a prime.

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 (2291563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145786 + 1145787.

It is an arithmetic number, because the mean of its divisors is an integer number (1145787).

2^2291573 is an apocalyptic number.

It is an amenable number.

2291573 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291573 is an equidigital number, since it uses as much as digits as its factorization.

2291573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 29.

The square root of 2291573 is about 1513.7942396508. The cubic root of 2291573 is about 131.8392019662.

The spelling of 2291573 in words is "two million, two hundred ninety-one thousand, five hundred seventy-three".