71529893 has 2 divisors, whose sum is σ = 71529894. Its totient is φ = 71529892.

The previous prime is 71529883. The next prime is 71529901. The reversal of 71529893 is 39892517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71351809 + 178084 = 8447^2 + 422^2 .

It is a cyclic number.

It is not a de Polignac number, because 71529893 - 2²⁶ = 4421029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71529823) 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, 35764946 + 35764947.

It is an arithmetic number, because the mean of its divisors is an integer number (35764947).

Almost surely, 2^71529893 is an apocalyptic number.

It is an amenable number.

71529893 is a deficient number, since it is larger than the sum of its proper divisors (1).

71529893 is an equidigital number, since it uses as much as digits as its factorization.

71529893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 44.

The square root of 71529893 is about 8457.5346880755. The cubic root of 71529893 is about 415.1093590927.

The spelling of 71529893 in words is "seventy-one million, five hundred twenty-nine thousand, eight hundred ninety-three".