204411257 has 2 divisors, whose sum is σ = 204411258. Its totient is φ = 204411256.

The previous prime is 204411211. The next prime is 204411283. The reversal of 204411257 is 752114402.

204411257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (204411283) can be obtained adding 204411257 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201327721 + 3083536 = 14189^2 + 1756^2 .

It is a cyclic number.

It is not a de Polignac number, because 204411257 - 2⁸ = 204411001 is a prime.

It is a super-3 number, since 3×204411257³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (204401257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102205628 + 102205629.

It is an arithmetic number, because the mean of its divisors is an integer number (102205629).

Almost surely, 2^204411257 is an apocalyptic number.

It is an amenable number.

204411257 is a deficient number, since it is larger than the sum of its proper divisors (1).

204411257 is an equidigital number, since it uses as much as digits as its factorization.

204411257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 204411257 is about 14297.2464831519. The cubic root of 204411257 is about 589.0718500539.

Adding to 204411257 its reverse (752114402), we get a palindrome (956525659).

The spelling of 204411257 in words is "two hundred four million, four hundred eleven thousand, two hundred fifty-seven".