71055407 has 2 divisors, whose sum is σ = 71055408. Its totient is φ = 71055406.

The previous prime is 71055401. The next prime is 71055409. The reversal of 71055407 is 70455017.

It is a strong prime.

It is an emirp because it is prime and its reverse (70455017) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71055407 - 2⁶ = 71055343 is a prime.

Together with 71055409, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71055407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71055401) 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, 35527703 + 35527704.

It is an arithmetic number, because the mean of its divisors is an integer number (35527704).

Almost surely, 2^71055407 is an apocalyptic number.

71055407 is a deficient number, since it is larger than the sum of its proper divisors (1).

71055407 is an equidigital number, since it uses as much as digits as its factorization.

71055407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 71055407 is about 8429.4369325596. The cubic root of 71055407 is about 414.1894606859.

The spelling of 71055407 in words is "seventy-one million, fifty-five thousand, four hundred seven".