87200111 has 2 divisors, whose sum is σ = 87200112. Its totient is φ = 87200110.

The previous prime is 87200081. The next prime is 87200119. The reversal of 87200111 is 11100278.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87200111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87200119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43600055 + 43600056.

It is an arithmetic number, because the mean of its divisors is an integer number (43600056).

Almost surely, 2^87200111 is an apocalyptic number.

87200111 is a deficient number, since it is larger than the sum of its proper divisors (1).

87200111 is an equidigital number, since it uses as much as digits as its factorization.

87200111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 87200111 is about 9338.0999673381. The cubic root of 87200111 is about 443.4442343518. Note that the first 3 decimals are identical.

Adding to 87200111 its reverse (11100278), we get a palindrome (98300389).

The spelling of 87200111 in words is "eighty-seven million, two hundred thousand, one hundred eleven".