87533447 has 2 divisors, whose sum is σ = 87533448. Its totient is φ = 87533446.

The previous prime is 87533419. The next prime is 87533449. The reversal of 87533447 is 74433578.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87533447 - 2¹⁴ = 87517063 is a prime.

Together with 87533449, 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 (87533449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43766723 + 43766724.

It is an arithmetic number, because the mean of its divisors is an integer number (43766724).

Almost surely, 2^87533447 is an apocalyptic number.

87533447 is a deficient number, since it is larger than the sum of its proper divisors (1).

87533447 is an equidigital number, since it uses as much as digits as its factorization.

87533447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 41.

The square root of 87533447 is about 9355.9311134702. The cubic root of 87533447 is about 444.0085607607.

The spelling of 87533447 in words is "eighty-seven million, five hundred thirty-three thousand, four hundred forty-seven".