87442583 has 2 divisors, whose sum is σ = 87442584. Its totient is φ = 87442582.

The previous prime is 87442549. The next prime is 87442601. The reversal of 87442583 is 38524478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87442583 - 2⁶ = 87442519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87442583.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87442183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43721291 + 43721292.

It is an arithmetic number, because the mean of its divisors is an integer number (43721292).

Almost surely, 2^87442583 is an apocalyptic number.

87442583 is a deficient number, since it is larger than the sum of its proper divisors (1).

87442583 is an equidigital number, since it uses as much as digits as its factorization.

87442583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 41.

The square root of 87442583 is about 9351.0738955480. The cubic root of 87442583 is about 443.8548733680.

The spelling of 87442583 in words is "eighty-seven million, four hundred forty-two thousand, five hundred eighty-three".