71080357 has 2 divisors, whose sum is σ = 71080358. Its totient is φ = 71080356.

The previous prime is 71080351. The next prime is 71080369. The reversal of 71080357 is 75308017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52983841 + 18096516 = 7279^2 + 4254^2 .

It is an emirp because it is prime and its reverse (75308017) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71080357 - 2¹⁵ = 71047589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71080351) 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, 35540178 + 35540179.

It is an arithmetic number, because the mean of its divisors is an integer number (35540179).

Almost surely, 2^71080357 is an apocalyptic number.

It is an amenable number.

71080357 is a deficient number, since it is larger than the sum of its proper divisors (1).

71080357 is an equidigital number, since it uses as much as digits as its factorization.

71080357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 71080357 is about 8430.9167354446. The cubic root of 71080357 is about 414.2379337399.

The spelling of 71080357 in words is "seventy-one million, eighty thousand, three hundred fifty-seven".