71540099 has 2 divisors, whose sum is σ = 71540100. Its totient is φ = 71540098.

The previous prime is 71540083. The next prime is 71540123. The reversal of 71540099 is 99004517.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71540099 - 2⁴ = 71540083 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71540009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35770049 + 35770050.

It is an arithmetic number, because the mean of its divisors is an integer number (35770050).

Almost surely, 2^71540099 is an apocalyptic number.

71540099 is a deficient number, since it is larger than the sum of its proper divisors (1).

71540099 is an equidigital number, since it uses as much as digits as its factorization.

71540099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 71540099 is about 8458.1380338701. The cubic root of 71540099 is about 415.1291009771.

The spelling of 71540099 in words is "seventy-one million, five hundred forty thousand, ninety-nine".