81524483 has 2 divisors, whose sum is σ = 81524484. Its totient is φ = 81524482.

The previous prime is 81524449. The next prime is 81524491. The reversal of 81524483 is 38442518.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 81524483 - 2⁶ = 81524419 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (81524083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40762241 + 40762242.

It is an arithmetic number, because the mean of its divisors is an integer number (40762242).

Almost surely, 2^81524483 is an apocalyptic number.

81524483 is a deficient number, since it is larger than the sum of its proper divisors (1).

81524483 is an equidigital number, since it uses as much as digits as its factorization.

81524483 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30720, while the sum is 35.

The square root of 81524483 is about 9029.0909287702. The cubic root of 81524483 is about 433.6067335178.

The spelling of 81524483 in words is "eighty-one million, five hundred twenty-four thousand, four hundred eighty-three".