7347517221 has 8 divisors (see below), whose sum is σ = 10687297824. Its totient is φ = 4453040720.

The previous prime is 7347517201. The next prime is 7347517223. The reversal of 7347517221 is 1227157437.

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 7347517221 - 2⁶ = 7347517157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7347517221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7347517223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111325986 + ... + 111326051.

It is an arithmetic number, because the mean of its divisors is an integer number (1335912228).

Almost surely, 2^7347517221 is an apocalyptic number.

It is an amenable number.

7347517221 is a deficient number, since it is larger than the sum of its proper divisors (3339780603).

7347517221 is a wasteful number, since it uses less digits than its factorization.

7347517221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222652051.

The product of its digits is 82320, while the sum is 39.

The square root of 7347517221 is about 85717.6599132291. The cubic root of 7347517221 is about 1944.0773370878.

The spelling of 7347517221 in words is "seven billion, three hundred forty-seven million, five hundred seventeen thousand, two hundred twenty-one".