81488003 has 2 divisors, whose sum is σ = 81488004. Its totient is φ = 81488002.

The previous prime is 81487997. The next prime is 81488059. The reversal of 81488003 is 30088418.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81488003 is a prime.

It is a Chen prime.

It is equal to p_4751366 and since 81488003 and 4751366 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (81488203) 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, 40744001 + 40744002.

It is an arithmetic number, because the mean of its divisors is an integer number (40744002).

Almost surely, 2^81488003 is an apocalyptic number.

81488003 is a deficient number, since it is larger than the sum of its proper divisors (1).

81488003 is an equidigital number, since it uses as much as digits as its factorization.

81488003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 81488003 is about 9027.0705658037. The cubic root of 81488003 is about 433.5420481087.

The spelling of 81488003 in words is "eighty-one million, four hundred eighty-eight thousand, three".