5457321657 has 12 divisors (see below), whose sum is σ = 8346492180. Its totient is φ = 3424201728.

The previous prime is 5457321647. The next prime is 5457321743. The reversal of 5457321657 is 7561237545.

It is a happy number.

5457321657 is a `hidden beast` number, since 5 + 4 + 573 + 21 + 6 + 57 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4078610496 + 1378711161 = 63864^2 + 37131^2 .

It is not a de Polignac number, because 5457321657 - 2⁴ = 5457321641 is a prime.

It is a super-2 number, since 2×5457321657² = 59564719335922451298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5457321647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17834232 + ... + 17834537.

It is an arithmetic number, because the mean of its divisors is an integer number (695541015).

Almost surely, 2^5457321657 is an apocalyptic number.

It is an amenable number.

5457321657 is a deficient number, since it is larger than the sum of its proper divisors (2889170523).

5457321657 is a wasteful number, since it uses less digits than its factorization.

5457321657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35668792 (or 35668789 counting only the distinct ones).

The product of its digits is 882000, while the sum is 45.

The square root of 5457321657 is about 73873.6871761522. The cubic root of 5457321657 is about 1760.5965669849.

The spelling of 5457321657 in words is "five billion, four hundred fifty-seven million, three hundred twenty-one thousand, six hundred fifty-seven".