71470291 has 2 divisors, whose sum is σ = 71470292. Its totient is φ = 71470290.

The previous prime is 71470249. The next prime is 71470313. The reversal of 71470291 is 19207417.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71470291 is a prime.

It is not a weakly prime, because it can be changed into another prime (71470211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35735145 + 35735146.

It is an arithmetic number, because the mean of its divisors is an integer number (35735146).

Almost surely, 2^71470291 is an apocalyptic number.

71470291 is a deficient number, since it is larger than the sum of its proper divisors (1).

71470291 is an equidigital number, since it uses as much as digits as its factorization.

71470291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 71470291 is about 8454.0103501238. The cubic root of 71470291 is about 414.9940309782.

The spelling of 71470291 in words is "seventy-one million, four hundred seventy thousand, two hundred ninety-one".