7226530081 has 3 divisors (see below), whose sum is σ = 7226615091. Its totient is φ = 7226445072.

The previous prime is 7226530079. The next prime is 7226530093. The reversal of 7226530081 is 1800356227.

It is a happy number.

The square root of 7226530081 is 85009.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1800356227 = 383 ⋅4700669.

It can be written as a sum of positive squares in only one way, i.e., 3963835681 + 3262694400 = 62959^2 + 57120^2 .

It is not a de Polignac number, because 7226530081 - 2¹ = 7226530079 is a prime.

It is a super-2 number, since 2×7226530081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7226530061) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 42505 + ... + 127513.

It is an arithmetic number, because the mean of its divisors is an integer number (2408871697).

Almost surely, 2^7226530081 is an apocalyptic number.

7226530081 is the 85009-th square number.

7226530081 is the 42505-th centered octagonal number.

It is an amenable number.

7226530081 is a deficient number, since it is larger than the sum of its proper divisors (85010).

7226530081 is an frugal number, since it uses more digits than its factorization.

7226530081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170018 (or 85009 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The cubic root of 7226530081 is about 1933.3475761502.

The spelling of 7226530081 in words is "seven billion, two hundred twenty-six million, five hundred thirty thousand, eighty-one".