2273565473 has 4 divisors (see below), whose sum is σ = 2276569620. Its totient is φ = 2270561328.

The previous prime is 2273565439. The next prime is 2273565493. The reversal of 2273565473 is 3745653722.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3745653722 = 2 ⋅1872826861.

It can be written as a sum of positive squares in 2 ways, for example, as 2022121024 + 251444449 = 44968^2 + 15857^2 .

It is a cyclic number.

It is not a de Polignac number, because 2273565473 - 2⁶ = 2273565409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2273565493) 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, 1500938 + ... + 1502451.

It is an arithmetic number, because the mean of its divisors is an integer number (569142405).

Almost surely, 2^2273565473 is an apocalyptic number.

It is an amenable number.

2273565473 is a deficient number, since it is larger than the sum of its proper divisors (3004147).

2273565473 is an equidigital number, since it uses as much as digits as its factorization.

2273565473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004146.

The product of its digits is 1058400, while the sum is 44.

The square root of 2273565473 is about 47681.9197704958. The cubic root of 2273565473 is about 1314.9295596632.

The spelling of 2273565473 in words is "two billion, two hundred seventy-three million, five hundred sixty-five thousand, four hundred seventy-three".