204557470057 has 2 divisors, whose sum is σ = 204557470058. Its totient is φ = 204557470056.

The previous prime is 204557470021. The next prime is 204557470063. The reversal of 204557470057 is 750074755402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204077159001 + 480311056 = 451749^2 + 21916^2 .

It is a cyclic number.

It is not a de Polignac number, because 204557470057 - 2⁷ = 204557469929 is a prime.

It is a super-2 number, since 2×204557470057² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204557469989 and 204557470016.

It is not a weakly prime, because it can be changed into another prime (204557470097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102278735028 + 102278735029.

It is an arithmetic number, because the mean of its divisors is an integer number (102278735029).

Almost surely, 2^204557470057 is an apocalyptic number.

It is an amenable number.

204557470057 is a deficient number, since it is larger than the sum of its proper divisors (1).

204557470057 is an equidigital number, since it uses as much as digits as its factorization.

204557470057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1372000, while the sum is 46.

The spelling of 204557470057 in words is "two hundred four billion, five hundred fifty-seven million, four hundred seventy thousand, fifty-seven".