87204127 has 2 divisors, whose sum is σ = 87204128. Its totient is φ = 87204126.

The previous prime is 87204119. The next prime is 87204137. The reversal of 87204127 is 72140278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87204127 - 2³ = 87204119 is a prime.

It is equal to p_5064376 and since 87204127 and 5064376 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87204137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43602063 + 43602064.

It is an arithmetic number, because the mean of its divisors is an integer number (43602064).

Almost surely, 2^87204127 is an apocalyptic number.

87204127 is a deficient number, since it is larger than the sum of its proper divisors (1).

87204127 is an equidigital number, since it uses as much as digits as its factorization.

87204127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 87204127 is about 9338.3149978998. The cubic root of 87204127 is about 443.4510418535.

The spelling of 87204127 in words is "eighty-seven million, two hundred four thousand, one hundred twenty-seven".