2273735521 has 4 divisors (see below), whose sum is σ = 2274001600. Its totient is φ = 2273469444.

The previous prime is 2273735479. The next prime is 2273735539. The reversal of 2273735521 is 1255373722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1255373722 = 2 ⋅627686861.

It is a cyclic number.

It is not a de Polignac number, because 2273735521 - 2¹³ = 2273727329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2273735221) 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, 119781 + ... + 137458.

It is an arithmetic number, because the mean of its divisors is an integer number (568500400).

Almost surely, 2^2273735521 is an apocalyptic number.

It is an amenable number.

2273735521 is a deficient number, since it is larger than the sum of its proper divisors (266079).

2273735521 is an equidigital number, since it uses as much as digits as its factorization.

2273735521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266078.

The product of its digits is 88200, while the sum is 37.

The square root of 2273735521 is about 47683.7028868355. The cubic root of 2273735521 is about 1314.9623415895.

The spelling of 2273735521 in words is "two billion, two hundred seventy-three million, seven hundred thirty-five thousand, five hundred twenty-one".