204115487 has 2 divisors, whose sum is σ = 204115488. Its totient is φ = 204115486.

The previous prime is 204115477. The next prime is 204115489. The reversal of 204115487 is 784511402.

It is a happy number.

204115487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204115487 - 2⁸ = 204115231 is a prime.

Together with 204115489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204115489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102057743 + 102057744.

It is an arithmetic number, because the mean of its divisors is an integer number (102057744).

Almost surely, 2^204115487 is an apocalyptic number.

204115487 is a deficient number, since it is larger than the sum of its proper divisors (1).

204115487 is an equidigital number, since it uses as much as digits as its factorization.

204115487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 204115487 is about 14286.8991387215. The cubic root of 204115487 is about 588.7875964950.

Adding to 204115487 its reverse (784511402), we get a palindrome (988626889).

The spelling of 204115487 in words is "two hundred four million, one hundred fifteen thousand, four hundred eighty-seven".