71207449 has 2 divisors, whose sum is σ = 71207450. Its totient is φ = 71207448.

The previous prime is 71207431. The next prime is 71207483. The reversal of 71207449 is 94470217.

It is an a-pointer prime, because the next prime (71207483) can be obtained adding 71207449 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68773849 + 2433600 = 8293^2 + 1560^2 .

It is a cyclic number.

It is not a de Polignac number, because 71207449 - 2⁵ = 71207417 is a prime.

It is not a weakly prime, because it can be changed into another prime (71207419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35603724 + 35603725.

It is an arithmetic number, because the mean of its divisors is an integer number (35603725).

Almost surely, 2^71207449 is an apocalyptic number.

It is an amenable number.

71207449 is a deficient number, since it is larger than the sum of its proper divisors (1).

71207449 is an equidigital number, since it uses as much as digits as its factorization.

71207449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 71207449 is about 8438.4506279293. The cubic root of 71207449 is about 414.4846731746.

The spelling of 71207449 in words is "seventy-one million, two hundred seven thousand, four hundred forty-nine".