6557452457 has 2 divisors, whose sum is σ = 6557452458. Its totient is φ = 6557452456.

The previous prime is 6557452453. The next prime is 6557452493. The reversal of 6557452457 is 7542547556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5577699856 + 979752601 = 74684^2 + 31301^2 .

It is a cyclic number.

It is not a de Polignac number, because 6557452457 - 2² = 6557452453 is a prime.

It is not a weakly prime, because it can be changed into another prime (6557452453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3278726228 + 3278726229.

It is an arithmetic number, because the mean of its divisors is an integer number (3278726229).

Almost surely, 2^6557452457 is an apocalyptic number.

It is an amenable number.

6557452457 is a deficient number, since it is larger than the sum of its proper divisors (1).

6557452457 is an equidigital number, since it uses as much as digits as its factorization.

6557452457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5880000, while the sum is 50.

The square root of 6557452457 is about 80978.0986254926. The cubic root of 6557452457 is about 1871.7379685389.

The spelling of 6557452457 in words is "six billion, five hundred fifty-seven million, four hundred fifty-two thousand, four hundred fifty-seven".