7221580073 has 4 divisors (see below), whose sum is σ = 7228571988. Its totient is φ = 7214588160.

The previous prime is 7221580049. The next prime is 7221580103. The reversal of 7221580073 is 3700851227.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4312811584 + 2908768489 = 65672^2 + 53933^2 .

It is a cyclic number.

It is not a de Polignac number, because 7221580073 - 2⁸ = 7221579817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7221580673) 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, 3494408 + ... + 3496473.

It is an arithmetic number, because the mean of its divisors is an integer number (1807142997).

Almost surely, 2^7221580073 is an apocalyptic number.

It is an amenable number.

7221580073 is a deficient number, since it is larger than the sum of its proper divisors (6991915).

7221580073 is a wasteful number, since it uses less digits than its factorization.

7221580073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6991914.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 7221580073 is about 84979.8804011867. The cubic root of 7221580073 is about 1932.9060423486.

The spelling of 7221580073 in words is "seven billion, two hundred twenty-one million, five hundred eighty thousand, seventy-three".