7221173057 has 8 divisors (see below), whose sum is σ = 8268613632. Its totient is φ = 6177693600.

The previous prime is 7221173053. The next prime is 7221173087. The reversal of 7221173057 is 7503711227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7221173057 - 2² = 7221173053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7221173053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 986369 + ... + 993662.

It is an arithmetic number, because the mean of its divisors is an integer number (1033576704).

Almost surely, 2^7221173057 is an apocalyptic number.

It is an amenable number.

7221173057 is a deficient number, since it is larger than the sum of its proper divisors (1047440575).

7221173057 is a wasteful number, since it uses less digits than its factorization.

7221173057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980559.

The product of its (nonzero) digits is 20580, while the sum is 35.

The square root of 7221173057 is about 84977.4855888311. The cubic root of 7221173057 is about 1932.8697281136.

The spelling of 7221173057 in words is "seven billion, two hundred twenty-one million, one hundred seventy-three thousand, fifty-seven".