71057099 has 2 divisors, whose sum is σ = 71057100. Its totient is φ = 71057098.

The previous prime is 71057087. The next prime is 71057123. The reversal of 71057099 is 99075017.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71057099 - 2⁴ = 71057083 is a prime.

It is a super-2 number, since 2×71057099² = 10098222636591602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71057069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35528549 + 35528550.

It is an arithmetic number, because the mean of its divisors is an integer number (35528550).

Almost surely, 2^71057099 is an apocalyptic number.

71057099 is a deficient number, since it is larger than the sum of its proper divisors (1).

71057099 is an equidigital number, since it uses as much as digits as its factorization.

71057099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19845, while the sum is 38.

The square root of 71057099 is about 8429.5372945376. The cubic root of 71057099 is about 414.1927482753.

The spelling of 71057099 in words is "seventy-one million, fifty-seven thousand, ninety-nine".