87822043 has 2 divisors, whose sum is σ = 87822044. Its totient is φ = 87822042.

The previous prime is 87822037. The next prime is 87822061. The reversal of 87822043 is 34022878.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87822043 - 2²⁵ = 54267611 is a prime.

It is a super-2 number, since 2×87822043² = 15425422473387698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87822013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43911021 + 43911022.

It is an arithmetic number, because the mean of its divisors is an integer number (43911022).

Almost surely, 2^87822043 is an apocalyptic number.

87822043 is a deficient number, since it is larger than the sum of its proper divisors (1).

87822043 is an equidigital number, since it uses as much as digits as its factorization.

87822043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 87822043 is about 9371.3415795178. The cubic root of 87822043 is about 444.4959878809.

The spelling of 87822043 in words is "eighty-seven million, eight hundred twenty-two thousand, forty-three".