5457321656 has 32 divisors (see below), whose sum is σ = 10345848240. Its totient is φ = 2698472448.

The previous prime is 5457321647. The next prime is 5457321743. The reversal of 5457321656 is 6561237545.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1777835 + ... + 1780901.

Almost surely, 2^5457321656 is an apocalyptic number.

It is an amenable number.

5457321656 is a deficient number, since it is larger than the sum of its proper divisors (4888526584).

5457321656 is a wasteful number, since it uses less digits than its factorization.

5457321656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5463 (or 5459 counting only the distinct ones).

The product of its digits is 756000, while the sum is 44.

The square root of 5457321656 is about 73873.6871693839. The cubic root of 5457321656 is about 1760.5965668773.

The spelling of 5457321656 in words is "five billion, four hundred fifty-seven million, three hundred twenty-one thousand, six hundred fifty-six".