87855113 has 2 divisors, whose sum is σ = 87855114. Its totient is φ = 87855112.

The previous prime is 87855091. The next prime is 87855137. The reversal of 87855113 is 31155878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85969984 + 1885129 = 9272^2 + 1373^2 .

It is a cyclic number.

It is not a de Polignac number, because 87855113 - 2⁶ = 87855049 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87855143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43927556 + 43927557.

It is an arithmetic number, because the mean of its divisors is an integer number (43927557).

Almost surely, 2^87855113 is an apocalyptic number.

It is an amenable number.

87855113 is a deficient number, since it is larger than the sum of its proper divisors (1).

87855113 is an equidigital number, since it uses as much as digits as its factorization.

87855113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33600, while the sum is 38.

The square root of 87855113 is about 9373.1058353141. The cubic root of 87855113 is about 444.5517735627.

The spelling of 87855113 in words is "eighty-seven million, eight hundred fifty-five thousand, one hundred thirteen".