87385511 has 2 divisors, whose sum is σ = 87385512. Its totient is φ = 87385510.

The previous prime is 87385481. The next prime is 87385513. The reversal of 87385511 is 11558378.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87385511 - 2⁶ = 87385447 is a prime.

It is a super-2 number, since 2×87385511² = 15272455065462242, which contains 22 as substring.

Together with 87385513, 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 (87385513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43692755 + 43692756.

It is an arithmetic number, because the mean of its divisors is an integer number (43692756).

Almost surely, 2^87385511 is an apocalyptic number.

87385511 is a deficient number, since it is larger than the sum of its proper divisors (1).

87385511 is an equidigital number, since it uses as much as digits as its factorization.

87385511 is an odious number, because the sum of its binary digits is odd.

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

The square root of 87385511 is about 9348.0217693371. The cubic root of 87385511 is about 443.7582873279.

The spelling of 87385511 in words is "eighty-seven million, three hundred eighty-five thousand, five hundred eleven".