3215221457 has 8 divisors (see below), whose sum is σ = 3675002496. Its totient is φ = 2755556352.

The previous prime is 3215221453. The next prime is 3215221459. The reversal of 3215221457 is 7541225123.

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 3215221457 - 2² = 3215221453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3215221453) 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, 42068 + ... + 90554.

It is an arithmetic number, because the mean of its divisors is an integer number (459375312).

Almost surely, 2^3215221457 is an apocalyptic number.

It is an amenable number.

3215221457 is a deficient number, since it is larger than the sum of its proper divisors (459781039).

3215221457 is an equidigital number, since it uses as much as digits as its factorization.

3215221457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57967.

The product of its digits is 16800, while the sum is 32.

The square root of 3215221457 is about 56702.9228259003. The cubic root of 3215221457 is about 1475.9454181399.

The spelling of 3215221457 in words is "three billion, two hundred fifteen million, two hundred twenty-one thousand, four hundred fifty-seven".