71157043 has 2 divisors, whose sum is σ = 71157044. Its totient is φ = 71157042.

The previous prime is 71157041. The next prime is 71157061. The reversal of 71157043 is 34075117.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71157043 - 2¹ = 71157041 is a prime.

Together with 71157041, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (71157041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35578521 + 35578522.

It is an arithmetic number, because the mean of its divisors is an integer number (35578522).

Almost surely, 2^71157043 is an apocalyptic number.

71157043 is a deficient number, since it is larger than the sum of its proper divisors (1).

71157043 is an equidigital number, since it uses as much as digits as its factorization.

71157043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 71157043 is about 8435.4634134705. The cubic root of 71157043 is about 414.3868489234.

The spelling of 71157043 in words is "seventy-one million, one hundred fifty-seven thousand, forty-three".